The BB is a TAG around 16/7/2 over 100 hands, and I'm about the same. MP3 is uknown. Pre flop and flop lines are standard, right? I'm thinking my turn push had little to negative EV because I assume his range is 22-AA with those stats and line so far.

Would do anything different, like check behind or bet less on the turn and hope to induce a bet from a weaker pocket pair, (or pay off a boat/quads/AA)? Would you play the turn different if villain was LAG or LP?

Party Poker No-Limit Hold'em, $ BB (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

SB ($50.45)
BB ($66.85)
UTG ($44.75)
UTG+1 ($49.50)
MP1 ($45)
MP2 ($51.45)
MP3 ($55.45)
Hero ($53.60)
Button ($21)

Preflop: Hero is CO with K, K. SB posts a blind of $0.25.
4 folds, MP3 raises to $1.5, Hero raises to $5, 2 folds, BB calls $4.50, MP3 calls $3.50.

Flop: ($15.25) 5, 7, 5 (3 players)
BB checks, MP3 checks, Hero bets $12, BB calls $12, MP3 folds.

Turn: ($39.25) 4 (2 players)
BB checks, Hero pushed remaining $37, BB folded