Is he nice just because he feels bad?

Ok so I've had a crush on this guy for 3 years now and told him I liked him a few months ago but turns out he doesn't feel the same. Anyway, I get over it but I still like him tbh. So I text him and he always replies really fast and we have really fun and great conversations. But I always text first he never texts first but he seems very interested in talking to me. So is he nice to me just because he feels bad for rejecting me or are we really friends now, or is it something else?
Is he nice just because he feels bad?
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