Problems maintaining an erection.
My girlfriend is a virgin, we fool around a lot and she turns me on without any effort. When I start penetrating I lose my erection really fast. I'm also unable to reach any orgasm with her, but I've always been able to last for quite a while so I don't know if this is related but I've been really close to coming through oral sex without being able to cross that simple line. Instead I just lost my erection.
Clearly this is a relaxation problem. There are several issues at play here. I was raped by my best friend in my early teens, but this didn't really affect my sexual life much initially and I had no real issues performing with my first girlfriend, however she turned out to be a homicidal manic depressive and she tried to kill me quite regularly over futile reasons, and as you can imagine this didn't really help my sex life with her but I was still able to perform, lasting 2 hours, sometimes less. Anyhow, after finally getting rid of her, and finding a new girlfriend, I find all these issues and past experiences running through my head every time I find myself in an intimate situation, even by myself, masturbating. I also find it really hard getting erections watching porn recently.
The disappointment of not being able to perform surely doesn't help me relax but I still manage to please her with my fingers, mouth and toys, so as far as I am concerned I've found a way to at least relax about that.
Still, any help on relaxing and focusing on her, without that focus reminding me of past experience and similar emotions would be great. :)