As a man, is it normal to have trouble reaching orgasm during sex?
Recently I got into a relationship with someone I've known for a few years. She's pretty much everything and more to me, both as a partner and as a friend. We've had sex too many times to count, but neither of us have managed to reach orgasm yet. Although she did get close a few times.
Despite that, sex has only gotten better over time. We stopped using condoms since she is very strict when it comes to birth control anyway, and we've also abandoned lube since slowly building up speed and depth during penetration does the job just as well.
I'm a 20 year old male and I consider myself decently healthy. The only consistent medication I take are antidepressants which I've been taking for 2-3 years now. When masturbating alone, I can reach orgasm without much trouble while watching porn. Using my imagination also works, however it takes much more effort and I often resort back to porn in the end.
I want to become more comfortable with the idea of having an orgasm in my girlfriend's presence, and avoid porn and thinking about anybody else whilst engaging in sexual activities.
So, is this normal? And do you guys/gals have any advice for someone facing these issues?