It has kind of started to occur to me that my penis does not seem to be as sensitive as other people. I've never really been intimate until over the past year or two, so I've started to notice. I can get erections when I'm aroused and everything. I'm able to masturbate, but apparently not as easily as other people (although I can't say I've really watched anyone do it). Last year a girl tried to give me a blowjob, and I couldn't come. My girlfriend last year would always try to give me a handjob, but I didn't really feel all that much even though I had an erection, and I couldn't come. She was kind of inexperienced as well, so I'm not sure if it was me or her. We tried to have sex a few times, and I could get an erection, but pretty soon after I put the condom on, I would lose it and go soft again. Last week I was with a girl and having sex, but I was only semi-hard and could not come (although I was a little drunk then). I guess I could say I'm in pretty good shape, I'm 21, 145-150 lbs, 5'5", and usually workout and run 20+ miles per week. What seems to be going on with me? Can I do anything to fix it or am I just supposed to remain abstinent forever?