Until 2 days ago I had been a virgin (20 years old), so I met a girl who I've seduced from an online dating site, primarily for sex, which we had both agreed upon doing. Within an hour of physically meeting each other we began having sex. (btw i was only partially attracted to her physically) During sex, I was having a hard time staying erect, and I ended up not orgasming from penetration. I know I am not gay, and usually i am incredibly attracted to girls, but for some reason I couldn't get turned on here.

I'm thinking the problem is that I didn't establish enough of an emotional connection with her prior to having sex, and also being that this was my first time having sex, it was very unfamiliar to me, and i didn't feel at all "myself". Have other guys, or even girls experienced this? It was almost like my sex drive wasn't turned on and i was just sticking my penis into a warm cavern.