@maxdancona,
I mean, frankly, I was thinking the same thing that max said.
To the OP dude: Do you know how many guys would love to trade places with you? Relationships are hard work! Sex with attractive people...not so much.
If you want the sex, have it. If you feel a bit degraded because that's all women seem to currently want from you, stop having casual sex.
It's cool that you can at least deal with women to the point of a one night stand - and that you are appealing enough to get to the sex. This shows me you can be conversational and confident to a point. Are they all blindly drunk? I'm trying to imagine why you're good enough to have sex with, but not to go to the movies with the next weekend.
Chicks have this issue frequently, but it's unusual to find a dude who can get sex but not a date... Where does it seem to go wrong for you?