My advice: Get back on the horse, and ride again. Men are so easily turned off, and away from women, yet they can break every bone in there body from a bike stunt, and be rushing right back to it after they get out of the hospital. I'm not saying this is you, but it is a lot of men.
So you ended up with 2 non-keepers.....so what? At least you're not as bad as a friend I know, who had one bad one and is completely over a love life. I think it is very noble of you to not want to become an egotistical pig and everything in sight....BUT, I do not believe that giving up your sex life is all that glorious either.
You're only 23, with a lot of life ahead of you (hopefully) and sex is another means to keeping healthy and happy. Not all women will hurt you, as some will. We have the same problems, though the fear of being old and alone, keeps us interested in finding a mate before our 30's, usually, as we women know that's when our bodies will start becoming imperfect.
If getting back on the horse doesn't work for you, you could always try smoking pot, as I've heard it does wonders for weakening the sex drive. Or, you could go to your doctor and get diagnosed as to why a healthy (and very sexy sounding) man like you wants nothing to do with sex or human beings, anymore.
I hope you find this in some way helpful. Love can happen bud, just don't give up so easily. Good Luck, man:)