What does he mean when he says I am special to him?

Okay I've talked about this guy before. Once before we couldn't stand each other. He would p*ss me off and then I would p*ss him off. And now that we are getting along again since the group of friends is no longer at the college. any way he is always telling I am special to him and I ask him what makes me so special and he replies with I don't know. I mean I like him a little bit and he says he is happy for that much.He also tells me that he still does like me. We dated once before and it was magical being his girlfriend,