Why can't my boyfriend stay hard?
Men lose or can't maintain erections for physical, psychological, or lifestyle reasons. Most often it comes down to stress, performance anxiety, or the excitement-anxiety mix-up that shows up in a newer relationship.
Losing an erection happens far more than most people realize, and it's rarely about attraction. If it's been going on for 6 months or more, in almost all sexual encounters, that pattern has a name: erectile dysfunction, or ED (American Psychiatric Association, 2013). It responds well to the right support, and that starts with an honest, blame-free conversation.
- Occasional erection trouble is common, and it isn't the same as erectile dysfunction
- Stress, performance anxiety, and new-relationship nerves are common causes in younger men
- Some everyday medications, including widely used antidepressants, can affect erections
- Losing an erection is very rarely about how attractive you are
- The most helpful things you can do are listen, stay calm, and let him lead on getting support
Does my boyfriend have erectile dysfunction?
Not every off night is ED. The Diagnostic and Statistical Manual of Mental Disorders (DSM-5) is the guide clinicians use to diagnose conditions like this. It generally reserves an ED diagnosis for men who struggle to get or keep an erection in almost all sexual encounters, over about 6 months (American Psychiatric Association, 2013).
One difficult night after a stressful week doesn't meet that bar. Neither does one time he's had too much to drink. Here's a quick way to tell the two apart.
| An off night | Possible ED | |
|---|---|---|
| How often it happens | Now and then | Almost every time you have sex |
| How long it's been going on | A night, or a rough week or two | About 6 months or more |
| What it usually means | A normal part of life, often linked to stress, tiredness, or alcohol | A pattern worth looking into |
| A good first step | Let it go, and don't make it a big deal | Encourage him to see a doctor to rule out physical causes |
Sources for this table: American Psychiatric Association (2013) and NHS (n.d.).
The longer-lasting pattern is more common than you'd think. Up to 30% of men under 40 have erection difficulties (Nguyen et al., 2017). If your boyfriend is one of them, he's part of a very large group, and most of them never talk about it.
Why does my boyfriend keep losing his erection?
Three things tend to be behind it: psychological factors, physical factors, and lifestyle factors. Often it's a mix of more than one.
For younger men, psychological causes come up a lot. One study of young men with ED found that up to 85% of cases were psychological, though other studies have found much lower figures (Nguyen et al., 2017). Physical causes can show up at any age too, so they're always worth ruling out.
| Type of cause | Common examples | Why it affects erections | A good first step |
|---|---|---|---|
| Psychological | Stress, performance anxiety, low self-esteem | His body treats sex as a threat and sends blood away from the penis | A calm conversation, then support like sex therapy or a structured program |
| Physical | Blood flow problems, hormone problems, high blood pressure, diabetes | Less blood reaches the penis, or sex drive drops | A check-up with a doctor |
| Medication | Some antidepressants, including SSRIs | Side effects can lower desire and make erections harder to get or keep | Talking to the doctor who prescribed it, without stopping it on his own |
| Lifestyle | Too much alcohol, too little sleep, a heavy meal before sex | These make it harder for the body to respond | Cutting back and seeing whether things change |
Psychological causes
Psychological causes include stress, performance anxiety, and low self-esteem. These happen when his nervous system decides, in that moment, that sex is a threat rather than something to enjoy. His body then responds to that threat.
Some men start watching and judging their own erection during sex. Therapists call this “spectatoring.” It's one of the fastest ways to lose an erection, because it's very hard to judge your performance and feel pleasure at the same time.
Physical causes
Physical causes include blood flow problems, hormone problems that lower sex drive, and health conditions such as high blood pressure and diabetes (NHS, n.d.). These are worth ruling out with a doctor, especially if the pattern keeps happening no matter how relaxed he seems.
Medications that can affect erections
Medication is one of the causes people overlook most. Some very common medicines can affect erections, and antidepressants are near the top of the list.
Antidepressants are widely used. In the US, about 13% of adults take one, including around 8% of men (Brody & Gu, 2020). Doctors also often prescribe a type of antidepressant called SSRIs (selective serotonin reuptake inhibitors) for anxiety, along with a similar group called SNRIs (National Institute of Mental Health, n.d.). So if your boyfriend takes medication for low mood or anxiety, there's a real chance it plays a part.
Sexual side effects from SSRIs are common, and often go unmentioned:
- Between 40% and 65% of people taking SSRIs have some kind of sexual side effect, which can include trouble getting or keeping an erection (Jing & Straw-Wilson, 2016)
- Only 14% of people raised sexual side effects on their own, but 58% reported them when their doctor asked directly (Jing & Straw-Wilson, 2016)
- Around 42% of men stopped taking psychiatric medication because of sexual side effects they noticed (Jing & Straw-Wilson, 2016)
If he's started a new medication or changed his dose recently, it's worth him mentioning any change in his erections to his doctor. He shouldn't stop taking anything on his own. A doctor can often adjust the dose or switch him to a different medicine (NHS, n.d.). If he's told you he takes one, this could be a gentle thing to raise, but it's his call whether to bring it to his doctor.
Lifestyle causes
Lifestyle causes cover the more everyday stuff: too much alcohol, too little sleep, or a heavy meal right before sex. Stress and tiredness on their own can be enough to cause a one-off problem (NHS, n.d.). These are usually the easiest causes to spot, and the first thing worth checking before assuming anything more complicated is going on.
My boyfriend can't stay hard. Is it my fault?
No. If your boyfriend struggles to stay hard, it's tempting to jump to the worst case scenario: Have I lost my appeal? Am I bad in bed? Is he not attracted to me anymore? Does he want out of this relationship? These questions are normal to wonder. But now that we've looked at the real causes of ED, we know the reason your boyfriend can't stay hard is very unlikely to be your fault.
Stress from work, a rough night's sleep, a new medication, or a spike of performance anxiety can all get in the way. None of them have anything to do with how attractive or good in bed you are. Even when his ED was triggered by something happening between the two of you, like an unresolved argument, that still isn't the same as it being your fault.
Why is my boyfriend avoiding sex or touch?
If your boyfriend has started pulling away from sex, or even from casual touch, he could be trying to avoid the chance of losing his erection again.
As his partner, this may leave you feeling confused, frustrated, or even rejected. He may be feeling everything from guilt and embarrassment to a sense of failure. He might also be in denial, still working out how to admit what's going on to himself, let alone to you. A lot of emotion is at play on both sides, which is exactly why talking about it helps.
Does this happen more in new relationships?
Starting a new relationship is an exciting time. Date nights, butterflies, and wanting to impress all add up to heightened emotions. The body can really struggle to tell excitement and anxiety apart.
That fight-or-flight response is built to protect him from danger. When it kicks in on a date, it's a sign of nerves, and it says nothing about how the relationship is going. Early on, your boyfriend may also feel pressure to prove himself, or wonder if he measures up to whoever came before him. Barge puts it plainly: “Men often have ED because they care too much. It's not a lack of desire. It's that they've gone into an anxious state.”
Longer relationships have their own stressors, like careers, money, and the general grind of daily life together. A newer relationship is its own category, driven by wanting this specific person to see him at his best.
How do I talk to my boyfriend about his erection issues?
It's cliché, but communication really is key. Here's how to make that first conversation easier for both of you.
Listen first. Before you offer any ideas, ask how he's doing and give him room to answer. Open questions like “How have things been for you lately?” work better than yes-or-no ones. Listen to understand what's going on for him, and let him get to what's bothering him, if anything is, in his own time. It might be stress at work, worry about the relationship, or something he can't put into words yet.
Pick the right moment. Start the conversation outside the bedroom, when neither of you is stressed or tired. A walk, a drive, or a quiet evening at home all work better than right after sex hasn't gone the way either of you hoped.
Lead with reassurance, not an ultimatum. Something like “I've noticed this has been happening, and I want you to know it doesn't change how I feel about you” opens the door without putting him on the defensive. The anxious fight-or-flight response can calm down with practice. Therapists call this nervous system regulation, and it starts with him feeling safe enough to try.
Small changes in wording can make a big difference. Here are a few swaps to try.
| Instead of | Try |
|---|---|
| “Is it me?” | “I've noticed this has been happening. How are you feeling about it?” |
| “Why can't you just relax?” | “Let's slow down. There's no pressure tonight.” |
| “Don't worry, it happens to everyone.” | “I'm here, and we can figure this out together.” |
| “You should see someone about it.” (right after sex) | Waiting for a calm moment, then: “Would it help to look into it together?” |
| Going quiet and turning away | Staying close. A cuddle or a laugh takes the pressure off. |
Things to avoid if your boyfriend can't stay hard
A short list of things to avoid:
- Don't compare him to past partners, porn, or what your friends have told you
- Don't bring up his erection trouble right after it happens, when emotions are highest
- Don't make the moment about you or your own insecurities
- Don't withhold affection or use it as leverage to get him to “deal with it”
Should I break up with my boyfriend because he can't stay hard?
No. Erection issues alone are not a reason to end a relationship. Plenty of couples work through this together and come out the other side with a better sex life and better communication than they started with.
How can I support my boyfriend without taking this over?
Your job is to be a supportive partner, not his therapist and not his project manager. He's the one who has to decide he wants support and go looking for it. You can point him toward resources. You can't do the work for him, and trying to take it on for him rarely helps.
Not knowing where to start, or feeling too embarrassed to ask, keeps a lot of men from getting help at all. Roughly 4 in 10 men with erection issues never seek any help (SingleCare survey, 2020).
A doctor's visit is a good first step, because it rules out anything physical.
For the psychological side, psychosexual therapy or a structured program covering the same ground can help. If he's ready to look into it, Mojo's Erection Reset program, created with Dr. Shannon Chavez, is designed for psychological erection issues like his. In Mojo's own data, 70% of men say their partner's pleasure is their main reason for starting the program. Point him toward it, and you're pointing him toward something built for both of you.
FAQs
Stay calm and keep things light in the moment. Stay close, and don't make a big deal of it. Bring it up later, somewhere relaxed and outside the bedroom.
Yes. Occasional erection trouble is common, especially after drinking, a bad night's sleep, or a stressful day. It's usually only called ED when it happens almost every time for about 6 months.
Almost never. Stress, anxiety, medication, or a physical health factor are far more likely causes.
Often his nervous system has shifted from arousal into a stress response partway through. This is a common performance-anxiety pattern. If it keeps happening, a doctor can check for physical causes too.
Yes, they can. Sexual side effects are common with SSRIs, a widely used type of antidepressant that's also prescribed for anxiety. He shouldn't stop taking them on his own, but his doctor may be able to adjust the dose or suggest a different option.
If it keeps happening, yes. A doctor can rule out physical causes like blood flow problems or medication side effects. That makes it easier to focus on the psychological side if that turns out to be the main cause.
Sources
- American Psychiatric Association. (2013). Diagnostic and statistical manual of mental disorders (5th ed.). https://www.psychologytoday.com/us/conditions/erectile-disorder
- Brody, D. J., & Gu, Q. (2020). Antidepressant use among adults: United States, 2015–2018 (NCHS Data Brief No. 377). National Center for Health Statistics. https://www.cdc.gov/nchs/products/databriefs/db377.htm
- Jing, E., & Straw-Wilson, K. (2016). Sexual dysfunction in selective serotonin reuptake inhibitors (SSRIs) and potential solutions: A narrative literature review. Mental Health Clinician, 6(4), 191–196. https://pmc.ncbi.nlm.nih.gov/articles/PMC6007725/
- National Institute of Mental Health. (n.d.). Mental health medications. https://www.nimh.nih.gov/health/topics/mental-health-medications
- NHS. (n.d.). Erection problems (erectile dysfunction). https://www.nhs.uk/conditions/erection-problems-erectile-dysfunction/
- Nguyen, H. M. T., et al. (2017). Erectile dysfunction in young men: A review of the prevalence and risk factors. Sexual Medicine Reviews. https://pubmed.ncbi.nlm.nih.gov/28642047/
- SingleCare. (2020). Erectile dysfunction survey (online consumer survey via AYTM, n=500 U.S. men with ED). https://www.singlecare.com/blog/news/erectile-dysfunction-survey/
Mojo aims to provide useful wellbeing resources to its users; however, you should not solely rely on opinions or advice available on the Website or given by the Community. Always seek advice from a qualified medical doctor or other healthcare professional before acting.
About the experts
A clinical psychologist and AASECT-certified sex therapist, Shannon counsels couples and helps men see erection issues as nervous system patterns, not defects.
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