Villain is boring 18/12 /2.5 over a medium sample and probably views me as a nittag who shows the nuts a lot. I didn't think his bet was beyond thin value and really didn't think his range could stand a raise - and also I didn't think he was good enough to know that i knew this.

$0.25/$0.5 No Limit Holdem
5 players
Converted at weaktight.com

Stacks:
UTG ($5.75)
CO ($53.70)
Hero ($60.35)
SB ($65.85)
BB ($50.00)

Pre-flop: ($0.75, 5 players) Hero is BTN
1 fold, CO raises to $2, Hero calls $2, 2 folds

Flop: ($4.75, 2 players)
CO checks, Hero checks

Turn: ($4.75, 2 players)
CO checks, Hero checks

River: ($4.75, 2 players)
CO bets $2, Hero raises to $9.5