At first they were just hooking up but now he says he likes her a lot and he told her. She said she didn't want a relationship. They're still doing it though and he told me that maybe one day she'll fall for him too. Meanwhile she's still sleeping with other guys. This has been going on for over a month now and I don't see how this could possibly work out for everyone.
I think I'll probably ask him where he thinks this is going next time we talk about it and see from there.