Comm 40/80: Not sure where I'm at

[ShawnHoo]

Great Commerce 40-80 Friday night.

A couple of people fold. A very loose, live player raises in MP. Folded around to the button, who 3-bets. Button, for the Commerce regulars here, is the son of a famous actor. He's a regular in the Comm 40/80 and similar Vegas games. My read is that he's not great, not bad. Very aggressive to a point, not super crazy, but has a bit of a temper and can steam a bit if he loses a hand or two. He lost a hand a few minutes ago.

SB folds. I call in the BB with 8c8h.

Flop: 2s 3c 4c

I check, MP bets, button raises. I 3-bet, MP calls, button caps. I call, MP calls.

Turn: Jc

I check, MP checks, button checks.

River: Ac

I check, MP checks, button bets. Fold, call, check-raise? Thoughts up to this point? I felt pretty lost once button capped the flop.