[James.]

from your read it sounds like MP2 is good, but certainly capable of bluffing and semibluffing. for that reason i think(since the pot is so large) a play to isolate him would be profitable. unfortunately given your position the only way to isolate him would be to bet into him on the turn, and the problem there is he's probably only raising a made hand. so really, you have a couple options. c/f the turn, or peel the turn and c/f the river. if you peel the turn, you need to be pretty sure your pair is going to win the pot frequently enough if you hit it. it's a really drawy board that taints several of your outs, but based on the pf action the flush draw is the most worrisome but a)no one necessarily has the flush draw and b)you have a bunch of overlay to continue.