I used to be into casual sex as a result of being abused. Now I'm totally asexual. I have to say that I did the casual sex thing without any attachment what so ever. I always felt empty.

If you have a guy you like and want him in a monogamous relationship you can't allow him to use you just to be with him. That would really suck.

I'm absolutely certain you can find someone that you find interesting and is mutually attracted to you. Casual sex is too empty and there is no return for what you have to put out.

Just listen to your heart and follow it.