Villain has only been at the table a couple of orbits, but he seems pretty aggressive. He's only shown down one hand. In that hand, I raised to $7 preflop with 33, a fish called, and he made it $27. I folded -- good/bad fold? -- and the fish called. The flop was A96 and the villain got all-in with AQs against the fish's 98o.

On this hand, I checked the flop because I wanted to see what he did on the turn before I decided whether I wanted to play for stacks. When he checked the turn I figured I was probably good, so I bet 2/3 pot hoping to represent AK with a diamond and induce a check-raise bluff all-in.

PokerStars No-Limit Hold'em, $2 BB (5 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

Hero ($200)
SB ($476.85)
BB ($177.60)
UTG ($402)
MP ($199.80)

Preflop: Hero is Button with J, J.
UTG raises to $8, 1 fold, Hero raises to $28, 2 folds, UTG calls $20.

Flop: ($59) 8, 5, 2 (2 players)
UTG checks, Hero checks.

Turn: ($59) 7 (2 players)
UTG checks, Hero bets $40, UTG raises to $374