I'm a heterosexual 24 year old male. My whole life i've been very very very horny. I've never had sexual problems of any sort., until last december.

About a year ago I met a girl. I really liked her and was very very attracted to her. We started dating, became exclusive, and had the best sex i've had in my life. Everything was going great. Then one night I lost my erection in the middle of the action. I was able to get it back just hard enough to finish the sex.

I've neevr been the same since that night. This literally happened overnight. One day I was a raging bull, masterbating all the time and having good sex with my partner, the next day I couldn't preform.

Well after awhile I noticed I wasn't as interested in having sex at all likence was. I have always loved porn, but now I don't get very turned on by it usually. But sometimes i'm as hard as a rock and like it the way I used to. It went the same with my girlfriend. Sometimes we would have hours of insanely great sex, sometimes I coudlnt get hard. I had problems with my erection most of the time;

not hard as I usually got
not hard for very long
hard, but once I was not being touched I lost it.

Some days I see a girl in a skirt on campus and I instantly get an erection, other days I dont even notice women. Everything was fine until the night I lost my erection, not it's always in the back of my mind. This problem has been going on for about 9 months now. Sometimes i'm a raging mass of sexuality, but usually don't even think about it and i'm always nervous when I have sex.

Is this happening because of nervousness? Low testosterone? I don't think it's physical ed because I am completely capable of getting lasting and firm erections, I just don't ever know when they will come. I want my libido back.

I'm in tears as I write this. The girl I met a year ago became my fiancee, she left me three days ago for someone else, "i didnt seem interested in her anymore".

Please help...