I don't mind the slowplay on flop too much but I always like to bet the flop when you have it and when you don't.

Looks to me like both of you are slowplaying. I bet he has J8 or 88 and slowplayed his 2 pair. I have lost many buy-ins on FH to better FH or set v. FH.

I call anyway.

Another problem is his AI on the river smells. Either he has the nuts or he doesn't. The AI river bet without the nuts is idiotic b/c the only hands that make that call have you crushed like in this case where you have a FH.