Why doesn't he want to be friends with me?

We have sex and he doesn't want to be friends. I said i was fine with being just friends with benefits if thats what he wanted. But he just just strictly does sex doesn't want to cuddle or at least hang out. He doesn't even want to be facebook friends.

I feel hurt because i share memes and make him laugh but he doesn't see me as good enough to be on his friends list. I look and he has friendships with a lot of girls that seem to last years but for some reason he really doesn't like me
Why doesn't he want to be friends with me?
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