50NL TPGK-Multi on bad board

[nickcee]

I seem to have trouble in these situations. If not behind all ready, probably won't have best on river, so I passed. Comments appreciated.
Full Tilt Poker, $0.25/$0.50 NL Hold'em Cash Game, 9 Players
LegoPoker Hand History Converter

UTG+2: $79.15
MP1: $25.10
MP2: $87.60
Hero (CO): $20.35
BTN: $50.75
SB: $34.05
BB: $50
UTG: $45.40
UTG+1: $9.75

Pre-Flop: A[img]/images/graemlins/heart.gif[/img] T[img]/images/graemlins/spade.gif[/img] dealt to Hero (CO)
3 folds, MP1 calls $0.50, MP2 calls $0.50, Hero calls $0.50, BTN folds, <font color="red">SB raises to $1</font>, BB calls $0.50, MP1 calls $0.50, MP2 calls $0.50, Hero calls $0.50

Flop: ($5) A[img]/images/graemlins/diamond.gif[/img] 3[img]/images/graemlins/club.gif[/img] 5[img]/images/graemlins/club.gif[/img] (5 Players)
SB checks, BB checks, MP1 checks, <font color="red">MP2 bets $2.50</font>, Hero calls $2.50, SB folds, BB calls $2.50, MP1 folds

Turn: ($12.50) 6[img]/images/graemlins/diamond.gif[/img] (3 Players)
<font color="red">BB bets $7</font>, MP2 calls $7, Hero folds

River: ($26.50) 2[img]/images/graemlins/club.gif[/img] (2 Players)
<font color="red">BB bets $15</font>, <font color="red">MP2 raises to $45.50</font>, BB calls $24.50 and is All-In