Like they said, bet out on the flop. I don't like giving free cards with TPTK in a 3 way pot. With that guys large reraise I'd be wondering what my pair beats. He minraised preflop, which could mean a monster. I think a lot of it goes down to reads, is he tight? Loose aggressive? If he was loose aggressive I'd be thinking he hit two pair or something along those lines. Would he minraise a big hand?