Villain is 46/9, .75 AF. Pretty donkish overall but has run hot so far.

Party Poker No-Limit Hold'em, $ Hero (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

UTG ($208)
MP ($235.22)
CO ($241)
Button ($227.75)
SB ($175)
Hero ($210.88)

Preflop: Hero is BB with K, K. SB posts a blind of $1.
1 fold, MP calls $2, CO calls $2, 1 fold, SB (poster) completes, Hero raises to $10, MP folds, CO calls $10, SB folds.

Flop: ($28) 5, 4, 5 (2 players)
Hero bets $17, CO calls $17.

Turn: ($62) 8 (2 players)
Hero checks, CO checks.

River: ($62) 5 (2 players)
Hero bets $40, CO raises to $209.9, Hero ???