I am a 20 year old male and have been in a relationship with my girlfriend for about 3 years now. We have sex occasionally, but the problem is I can't hold my semen in for too long, in other words she wants me to keep going, but after couple minutes I release because i cannot hold it in. she is unsatisfied everytime, and I don't if its normal or not? I eat healthy, exercise. I want to pleasure my girlfriend because i really do care about her.
definitely could be that you don't have sex often, what I would do is seriously masturbate everyday until you get used to masturbating several times a day, trust me I have an exact opposite problem of you I last too long in bed and women complain that it starts to hurt their genital area because I don't cum when they cum. So try that.
When you masturbate try to make it last longer by stopping right before you bust. You have to learn your thresh hold.
Next time you think your going to have sex mastubate several times that day and try drinking a beer or glass of wine right before hand.
Are you nervous when you have sex with her or relaxed? The more relaxed I am the longer I last.
Also more sex would help. See if she will start doing it everyday a couple times a day. She probably won't but it's worth a shot (tell her you need to be trained). Once you get good at sport screwing, making love is a breeze. I've went full circle from coming way to early (sometimes during foreplay), to not being able to get off sometimes at all and having to fake it just because the women can't take anymore pounding.