Am I supposed to bet this?

[CardSharpCook]

BB seems like he's a little tilty, I was surprised he didn't raise the turn.


Dealt to Hero [2d Ac]
amuth: folds
Himalaia: folds
David145: folds
Hero: raises $10 to $20
BB: calls $10


*** FLOP *** [Ad 9d 5h]
Hero: bets $10
BB: calls $10

*** TURN *** [Ad 9d 5h] [8c]
Hero: bets $20
BB: calls $20

*** RIVER *** [Ad 9d 5h 8c] [6d]