Staying out late isn't a cultural thing. It's not like blacks are the only ones that stay out late. I stay out late. The point is that he's only coming over to your place late. If you have a problem with it, tell him and if he isn't willing to change that then it's best if you end things. If all you're asking for is one night a week where he comes there before midnight, then I don't see that as being needy at all. In fact, I'd get rather annoyed if some woman kept wanting to come over to my place only at midnight or later.