Sexual Red Flags: 12 Signs Worth Taking Seriously

Chemistry should feel exciting, not leave you questioning whether your boundaries were respected.

You met someone, and the chemistry is off the charts. They are bold, they take charge, and they seem to know exactly what they want. It feels thrilling. It also feels a little like you are along for the ride.

Here is the tricky part about sexual red flags: the most important ones rarely look like red flags in the moment. They look like passion. They look like confidence. And in a culture that treats intensity as proof of desire, it is easy to miss the difference between someone who is into you and someone who is simply not checking in with you. A large survey of more than 4,000 U.S. college students found that about 40% had engaged in sexual choking, a high-risk behavior that is often introduced without much conversation at all (Herbenick et al., 2022).

In this post, I will walk you through the sexual red flags people most often mistake for chemistry, the communication red flags before and after sex that are easy to overlook, the ones that only show up once you have been together a while, and how to tell a sexual mismatch from a true warning sign. You will also get a simple check-in you can try this week.

And if you'd rather watch than read, feel free to check out my YouTube video on this topic!

https://youtu.be/1-n--ne-EYs

What Counts as a Sexual Red Flag (and What Doesn't)

A sexual red flag is a pattern that tells you your partner's wants may matter more to them than your safety, comfort, or choice. It is about how someone treats you, not what they like.

That distinction matters. Wanting sex more often than you do is not a red flag. Having a kink you don't share is not a red flag. Being nervous, inexperienced, or awkward is not a red flag. Those are differences, and differences are part of every relationship.

Red flags cluster around three themes:

• Consent is treated as an obstacle instead of an ongoing conversation.

• Communication about sex is punished, dismissed, or avoided.

• Control shows up through pressure, guilt, secrecy, or rewriting what happened.

One awkward moment is not a pattern. But when you notice the same theme again and again, your body is usually picking up on something real.

Sexual Red Flags That Look Like Chemistry or Confidence

This is the category I talk about most in my practice, because it is the one people defend the longest. When something feels exciting, we want it to be good.

Consent isn't optional, especially when sex gets rough. Always ask first.

1. Escalation without asking

Your partner tries something new in the middle of sex (a slap, hair pulling, a hand on your throat) without ever raising it first. It might be framed as spontaneity. It is actually skipping a step.

Choking is the clearest example. In that same large campus study, being choked was more common among women than men, and people who had been choked reported effects like not being able to breathe (43%) and difficulty swallowing (39%), with roughly 3% reporting they had lost consciousness (Herbenick et al., 2022). Adventurous sex can be wonderful. Adventurous sex that was never discussed is a gamble with your body.

Confidence sounds like: "I'd love to try something a little rougher sometime. What do you think?"

A red flag sounds like: nothing at all, followed by a surprise.

2. "I just can't control myself around you"

It sounds flattering. It is also a quiet shift of responsibility onto you. Desire is not a force of nature that erases someone's ability to slow down, ask, or stop. A partner who frames their arousal as uncontrollable is telling you something about how they will handle your "no" later.

3. The partner who "just knows" what you like

Sexual confidence is lovely. Sexual certainty that never asks is something else. If your partner never checks in, brushes off your feedback, or seems more interested in performing than in connecting, pay attention.

Researchers have studied a pattern called sexual narcissism, which includes sexual entitlement, low sexual empathy, a willingness to exploit, and an inflated sense of one's own sexual skill. In a study of 378 men, sexual narcissism predicted sexual aggression, while general narcissism did not once the sexual version was accounted for (Widman & McNulty, 2010). In plain language: how someone thinks about sex specifically tells you more than their overall personality.

4. Moving fast and pressing hard

Intense early attention, constant texting, talk of forever on date two, and a push toward sex before you feel ready can feel like being chosen. When the pace is set by one person and the other is expected to keep up, that is not chemistry. That is a current.

Communication Red Flags Before and After Sex

Communication is where healthy sex lives. A meta-analysis of 48 studies found that couples who communicate more about sex report better sexual functioning across desire, arousal, and orgasm, with especially strong links for married couples (Mallory et al., 2019). So when talking about sex is shut down, that is not a small thing.

A healthy sexual connection starts with feeling safe enough to say yes, no, or not yet.

Red flags before sex

5. Your "no" becomes the start of a negotiation. Asking again. Asking differently. Sulking. Continuing to kiss and touch after you have said you are not in the mood. Research on sexual coercion shows that both men and women report being pressured through tactics like persistent touching and emotional manipulation, not only through force (Struckman-Johnson et al., 2003). Pressure does not need to be dramatic to count.

6. Safer sex conversations get brushed off. Rolling their eyes at STI testing, refusing to talk about contraception, or complaining about condoms until you give in are all red flags. At the far end of this spectrum is removing a condom without consent, sometimes called "stealthing." In a study at a sexual health clinic in Melbourne, 32% of women and 19% of men who have sex with men reported having experienced it (Latimer et al., 2018).

7. Questions that shame instead of learn. "How many people have you slept with?" asked with a grimace. Teasing about your body, your experience level, or what turns you on. Curiosity opens a door. Judgment slams it.

Red flags after sex

8. The disappearing act. Some people need a few minutes to themselves after sex, and that is fine. A partner who routinely goes cold, grabs their phone, or leaves you feeling used is showing you something different. After-sex closeness matters more than we tend to think. In two studies, longer and higher-quality affection after sex (cuddling, kissing, talking) predicted greater sexual and relationship satisfaction, and couples who kept it up were more satisfied three months later (Muise et al., 2014).

9. Feedback turns into a fight. You gently say, "That didn't really work for me," and your partner gets defensive, wounded, or angry. If honesty about sex gets punished, you will stop being honest. And sex without honest feedback does not get better.

A healthy partner can hear "slower" or "not that" and simply adjust. That is the bar. It is not a high bar.

Sexual Red Flags That Show Up Later in a Relationship

Some warning signs do not appear in the first three months. They surface once life gets real: kids, careers, aging parents, bodies that change.

Sex should never feel like something you owe someone. Desire grows from connection, not keeping score.

10. Sex becomes a bargaining chip or a debt

"I did the dishes, so..." Or the reverse: withholding affection as punishment after an argument. When sex turns into currency, it stops being a shared experience and becomes a transaction someone is keeping score of.

There is also a quieter version. Many long-term partners have sex mainly to avoid a partner's disappointment or anger. Research on sexual motivation shows that sex driven by avoidance goals (like avoiding conflict) is linked to lower desire and satisfaction, while sex driven by wanting closeness is linked to higher satisfaction, for both partners (Muise, Impett, & Desmarais, 2013). If you are regularly having sex to keep the peace, that is worth looking at.

11. Control over your body and your choices

This one is often missed entirely. Reproductive coercion includes pressuring someone to get pregnant, interfering with birth control, or refusing to use protection as a way to exert control. In a study of more than 1,200 young women at family planning clinics, 19% reported pregnancy coercion and 15% reported birth control sabotage, and both were linked to unintended pregnancy (Miller et al., 2010).

Related later-stage red flags include:

• Mocking or pressuring you about body changes after pregnancy, illness, surgery, or menopause

• Dismissing pain during sex ("just relax") instead of taking it seriously

• Pushing for sex when you are sick, exhausted, or asleep

• Resenting a medication or medical condition that affects your desire

  
  

Midlife changes deserve curiosity and care. A partner who treats them as an inconvenience to their sex life is telling you where you rank.

12. Rewriting what happened

"You wanted it." "You didn't say no." "You're remembering it wrong." When your partner consistently reframes sexual experiences that felt bad to you, over time you may start doubting your own memory. That erosion of trust in yourself is often the most damaging part. Interestingly, in the Melbourne stealthing study, people who had experienced non-consensual condom removal were less likely to label it as sexual assault than those who had not (Latimer et al., 2018). We often minimize what happened to us most.

Sexual Compatibility vs. Sexual Red Flags: How to Tell the Difference

Not every sexual mismatch is a red flag. The real question is how you treat each other when your needs differ.

Not everyone is sexually compatible. You might want sex twice a week while your partner is happy with twice a month. One of you loves novelty, the other loves routine. That is a mismatch, and mismatches are normal.

Here is the simplest way I explain it to clients: a mismatch is about what you each want. A red flag is about how your partner treats you when you want different things.

A sexual mismatch sounds like:

• "I wish we had sex more. Can we talk about what might help?"

• "That's not for me, but I'm glad you told me."

• "I'm frustrated, and I don't want you to feel pressured."

  
  

A sexual red flag sounds like:

• "If you loved me, you'd do this."

• "Everyone else does it. What's wrong with you?"

• "Fine. I'll get it somewhere else."

  
  

The research backs this up. In one study of people navigating differences in desire, partnered strategies like talking openly and finding other ways to be intimate together were linked to higher sexual and relationship satisfaction, while disengaging and doing nothing was linked to the lowest sexual satisfaction (Vowels & Mark, 2020).

Beliefs matter too. People who see sexual satisfaction as something couples build through effort and growth (called sexual growth beliefs) tend to have more satisfying sex and relationships than those who believe sexual compatibility is simply meant to be or not (Maxwell et al., 2017). And partners who are motivated to meet each other's sexual needs, within their own limits, sustain desire better over time (Muise, Impett, Kogan, & Desmarais, 2013).

Four questions to sort it out

1. When I say no, what happens next? Acceptance, or pressure?

2. When I share a preference, am I met with curiosity or contempt?

3. Do we both try to find middle ground, or does one person always give in?

4. Do I feel safer or smaller after we talk about sex?

   
   

If your answers point to curiosity, effort, and safety, you are likely dealing with a mismatch you can work with. If they point to pressure, contempt, or fear, take that seriously.

Try This Week: The Green Flag Check-In

Healthy connection is built in the little conversations.

Red flags are easier to see when you know what green flags look like. This check-in takes about 15 minutes and works for new and long-term relationships alike. Pick a calm, non-sexual moment (not in bed, not right after a disagreement).

Step 1: Name one thing that feels good. Each of you shares one thing about your sex life or physical closeness you want more of. Keep it specific. "I love when you kiss me before you leave for work."

Step 2: Name one thing you want to adjust. Use this script: "Something I'd like to try differently is ____. It would help me feel ____."

Step 3: Practice the pause. Each of you says out loud: "If I ever say stop or not tonight, what I need from you is ____." Then the other person repeats it back.

Step 4: Notice the response. Here is the real test. Did your partner listen, ask a question, and repeat back what you said? Or did they joke it away, get defensive, or turn it back on you?

A partner who can do this, even clumsily, is showing you a green flag. A partner who can't do it at all, after several calm tries, is showing you something too.

When to Reach Out for Professional Support

If you recognized your relationship in this post, you are not overreacting and you are not alone. Support can look like talking with a trusted friend, a medical provider, a support group, or a therapist.

In my practice, I work with individuals and couples to untangle mismatches, rebuild communication, and figure out whether a pattern is workable. I see California residents virtually and offer in-person couples intensives in Mission Viejo, using approaches like the Gottman Method, Emotionally Focused Therapy (EFT), and EMDR for trauma-related concerns. Couples work is not the right fit when one partner feels unsafe, so if fear, coercion, or violence is part of the picture, individual support comes first.

If you ever feel unsafe, the National Domestic Violence Hotline offers confidential support 24/7 by phone, text, or chat.

FAQ

What are some sexual red flags in a new relationship?

Common early red flags include pushing past your "no," escalating during sex without asking, dismissing safer sex conversations, and shaming your experience or body. Watch for a pattern of your comfort coming second. One awkward moment is not a red flag, but repeated pressure is.

Is it a red flag if my partner wants sex more than I do?

Not by itself. Differences in desire are common in long-term relationships. It becomes a red flag when your partner responds to the difference with guilt, threats, sulking, or pressure instead of conversation.

What is sexual coercion in a relationship?

Sexual coercion is using pressure, manipulation, guilt, or threats to get sex from someone who does not freely want it. It can happen in marriages and long-term relationships, and it does not require physical force to count.

Can you fix sexual incompatibility?

Often, yes. Couples who talk openly, get creative about intimacy, and treat their sex life as something they build together tend to fare better. Some differences are workable and some are not, and a sex therapist can help you figure out which is which.

Final Thoughts

Healthy intimacy starts with trust, communication, and feeling safe to be yourself.

Great sex is not built on intensity. It is built on trust, curiosity, and the confidence that your "no" will be heard as clearly as your "yes." If this post helped you put words to something that has felt off, that is a meaningful first step. And if it helped you notice how many green flags your partner already has, celebrate that too.

Know your body. Own your pleasure. Lose the shame.

I would love to keep this conversation going. Subscribe to my YouTube channel for new videos on sex, intimacy, and relationships, and join my newsletter for research-backed tips delivered straight to your inbox. Which of these red flags surprised you most? Leave a comment or send me your questions. I read them, and they often shape what I cover next.

This post is for educational purposes only and is not a substitute for individualized therapy or medical care.

References

• Herbenick, D., Fu, T.-C., Eastman-Mueller, H., Thomas, S., Svetina Valdivia, D., Rosenberg, M., Guerra-Reyes, L., Wright, P. J., Kawata, K., & Feiner, J. R. (2022). Frequency, method, intensity, and health sequelae of sexual choking among U.S. undergraduate and graduate students. Archives of Sexual Behavior, 51(6), 3121–3139. https://doi.org/10.1007/s10508-022-02347-y

• Latimer, R. L., Vodstrcil, L. A., Fairley, C. K., Cornelisse, V. J., Chow, E. P. F., Read, T. R. H., & Bradshaw, C. S. (2018). Non-consensual condom removal, reported by patients at a sexual health clinic in Melbourne, Australia. PLOS ONE, 13(12), e0209779. https://doi.org/10.1371/journal.pone.0209779

• Mallory, A. B., Stanton, A. M., & Handy, A. B. (2019). Couples' sexual communication and dimensions of sexual function: A meta-analysis. The Journal of Sex Research, 56(7), 882–898. https://doi.org/10.1080/00224499.2019.1568375

• Maxwell, J. A., Muise, A., MacDonald, G., Day, L. C., Rosen, N. O., & Impett, E. A. (2017). How implicit theories of sexuality shape sexual and relationship well-being. Journal of Personality and Social Psychology, 112(2), 238–279. https://doi.org/10.1037/pspi0000078

• Miller, E., Decker, M. R., McCauley, H. L., Tancredi, D. J., Levenson, R. R., Waldman, J., Schoenwald, P., & Silverman, J. G. (2010). Pregnancy coercion, intimate partner violence and unintended pregnancy. Contraception, 81(4), 316–322. https://doi.org/10.1016/j.contraception.2009.12.004

• Muise, A., Giang, E., & Impett, E. A. (2014). Post sex affectionate exchanges promote sexual and relationship satisfaction. Archives of Sexual Behavior, 43(7), 1391–1402. https://doi.org/10.1007/s10508-014-0305-3

• Muise, A., Impett, E. A., & Desmarais, S. (2013). Getting it on versus getting it over with: Sexual motivation, desire, and satisfaction in intimate bonds. Personality and Social Psychology Bulletin, 39(10), 1320–1332. https://doi.org/10.1177/0146167213490963

• Muise, A., Impett, E. A., Kogan, A., & Desmarais, S. (2013). Keeping the spark alive: Being motivated to meet a partner's sexual needs sustains sexual desire in long-term romantic relationships. Social Psychological and Personality Science, 4(3), 267–273. https://doi.org/10.1177/1948550612457185

• Struckman-Johnson, C., Struckman-Johnson, D., & Anderson, P. B. (2003). Tactics of sexual coercion: When men and women won't take no for an answer. The Journal of Sex Research, 40(1), 76–86. https://doi.org/10.1080/00224490309552168

• Vowels, L. M., & Mark, K. P. (2020). Strategies for mitigating sexual desire discrepancy in relationships. Archives of Sexual Behavior, 49(3), 1017–1028. https://doi.org/10.1007/s10508-020-01640-y

• Widman, L., & McNulty, J. K. (2010). Sexual narcissism and the perpetration of sexual aggression. Archives of Sexual Behavior, 39(4), 926–939. https://doi.org/10.1007/s10508-008-9461-7

About the author

Dr. Holly is a leading expert in sexual health based in Orange County, certified as both a clinical sexologist and AASECT sex therapist. With extensive experience in sex therapy, sexual wellness, and relationship counseling, Holly provides evidence-based insights to clients in Orange County, the state of California and beyond. Recognized for expertise in sexual trauma recovery, sexual dysfunction, and intimacy, Holly is dedicated to empowering individuals with practical advice and research-backed strategies. For more, follow Holly for expert advice on sexual health and relationships.

Visit www.thehollywoodsexologist.com to learn more and request a consultation.