Question for the masses...

Okay, when it comes to fic where one of the main characters is a hooker or rentboy, what characteristics or plot points do you generally look for or like to see? Outside of the sex, of course, since that's a given. I'm genuinely curious because, right now, all I can see is the sex and the dancing in the club and I know there should be more than that. And it's driving me nuts trying to figure it out. So...help?