Did I screw this one up that bad?

[MyTurn2Raise]

BB is 65/0/0.34

Party Poker 2/4 (10 handed) converter

Preflop: Hero is MP1 with A[img]/images/graemlins/heart.gif[/img], T[img]/images/graemlins/heart.gif[/img].
<font color="#666666">2 foldsHero raises5 foldsBB calls</font>.

Flop: A[img]/images/graemlins/club.gif[/img], 2[img]/images/graemlins/diamond.gif[/img], 5[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks. Hero Bets. BB calls.

Turn: 5[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
BB bets. Hero calls.

River: 2[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
BB bets. Hero calls.

Final Pot:


My thought is that passive of an opponent had to hit his hand to bet out. Somehow, I think it's to weak to just fold. I think this is a lesson on how to royally screw up and leak chips.