Villain is decent regular. He had been 3betting me quite a bit the first 10 minutes or so (now 20 min in) but has calmed down some since. He won a big pot when he flopped 2pr vs my TPTK. He has won 3/4 3bet pots on the flop with aggression and is pretty aggro postflop in general. I'm gaining some momentum before this:

PokerStars No-Limit Hold'em, $4 BB (2 handed) Poker-Stars Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

BB ($610.85)
Hero ($496.95)

Preflop: Hero is Button with 4, 3.
Hero raises to $12, BB raises to $40, Hero raises to $108, BB calls $68.

Flop: ($216) 5, 5, 6 (2 players)
BB checks, Hero checks.

Turn: ($216) T (2 players)
BB bets $112, Hero