Well if you can get your drivers licence. The ability to get out and do other things can help manage the obsessions.

Then if possible have sex. Ask friends if they have ever noticed a woman flirting with you (I was never able to tell and apparently missed several opportunities in my 20's) if you like them ask them out. You may have to try many different women and if they seem interested you may even have to ask them out multiple times (I needed to ask my wife out 3 times before she said yes, and this only happened at the urging of several friends and coworkers.) If you don't find her sexually appealing or you don't like her personality just ask for no strings sex. My own first sexual experience was with a woman I didn't find attractive but others told me she kind of liked me, I asked, "Would you like to have sex?" (an exact quote) and she said yes, 2 hours later I was no longer a virgin and I no longer had a desire for any sex again (at least until I met my wife.) Hell if you live in a place that is ok with paying for sex do it just to get that experience under your belt.

What I found is that sex has been and is over hyped, TV shows, movies, books and nearly every form of media suggest that sex is the greatest thing to happen to men since we decided to come down from the trees. In reality its OK I wont lie but there are several things that people leave out of their stories about sexual conquests. Things like queffing, the absurd sex faces, sweat dripping off your partner when its to hot, the unpleasant smell if a woman doesn't wash properly, the unpleasantness of wearing a condom, the inability to feel any thing between the condom and a woman who has had several children, the list goes on and on.

If non of this helps you can always look for management techniques that obsessive compulsive people use to minimize their compulsions.