I think that that most women seek the same basic essential qualities (physically attractive, funny, respectful etc, etc,) in a man she is going to have sex with whether he is a potential one night stand, friends with benefits or a boyfriend.
If a girl sees a man as "boyfriend material" though she will likely be looking for a lot more than just a guy who can satisfy her sexual needs. Depending on her values he may have to be presentable to friends and family, have a certain education level, a certain income level etc, etc. either way clingyness will be sure to scare most of us off.