Are we just friends or does he like me at all?

So there's this guy tht I really like and he has s girlfriend. I hate his girlfriend and I always joke with him about their relationship. He always says I'm ugly and weird. My nickname from him is pigton cuz my name is Payton and I have a small nose. We text like for 4 hours daily and whenever we are both on Facebook he messages me. When we r both in the hallway we usually have playful fist fights. I have no idea what any of this means.