need some friendship help?

i have this friend who is starting to give me problems. he sits at my lunch table and we will usually talk and joke around but lately he has been really self centered. he will say his opinion then if me or someone else gives an opinion he will roll his eyes or ignore it. and when he says a joke people laugh but when me or someone else does hell say that was dumb or say something under his breath. but if you try telling him what he does he just makes up all these faults about you that you know for a fact are not true just to make YOU look bad. and when we talk he only talks about what HE wants to talk about cause if i wanna talk about something he will lose interest or just say ya and do something else. need help? sorry if its long