The 2nd worst call ever

[ntnBO]

1st place was when I was called down with 2 pair on the board and villain held 22!

PokerStars 1/2 Hold'em (10 handed) Poker Stars Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Preflop: Hero is CO with A[img]/images/graemlins/spade.gif[/img], T[img]/images/graemlins/spade.gif[/img].
UTG calls, <font color="#666666">5 folds</font>, <font color="#CC3333">Hero raises</font>, <font color="#666666">2 folds</font>, BB calls, UTG calls.

Flop: (6.50 SB) 3[img]/images/graemlins/spade.gif[/img], 8[img]/images/graemlins/heart.gif[/img], 5[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, <font color="#CC3333">UTG bets</font>, Hero calls, BB folds.

Turn: (4.25 BB) 8[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">UTG bets</font>, <font color="#CC3333">Hero raises</font>, UTG calls.

River: (8.25 BB) 5[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
UTG checks, <font color="#CC3333">Hero bets</font>, UTG calls.

Final Pot: 10.25 BB

Results:
UTG has 2s 3h (two pair, eights and fives).
Hero has As Ts (flush, ace high).
Outcome: Hero wins 10.25 BB.