50NL, backdoor draw completes

[grouchie]

what do you guys do in this type of situation?
Villian is running at 18/0/2.2 over 50 hands.
Hero is 11/8/2/3 over same period

I am lost.

Poker Stars - No Limit Hold'em Cash Game - $0.25/$0.50 Blinds - 9 Players - (LegoPoker Hand History Converter)

SB: $80.55
BB: $47.75
UTG: $49.25
UTG+1: $32.75
MP1: $52.90
MP2: $50.70
MP3: $122.10
CO: $29.15
Hero (BTN): $103.90

Preflop: Hero is dealt Q[img]/images/graemlins/club.gif[/img] K[img]/images/graemlins/spade.gif[/img] (9 Players)
2 folds, MP1 calls $0.50, MP2 calls $0.50, MP3 folds, CO calls $0.50, Hero calls $0.50, SB calls $0.25, BB checks

Flop: ($3) T[img]/images/graemlins/club.gif[/img] J[img]/images/graemlins/spade.gif[/img] 8[img]/images/graemlins/spade.gif[/img] (6 Players)
SB checks, BB checks, MP1 checks, <font color="red">MP2 bets $1.50</font>, CO folds, <font color="red">Hero raises to $5.00</font>, 3 folds, MP2 calls $3.50

Turn: ($13) A[img]/images/graemlins/club.gif[/img] (2 Players)
MP2 checks, <font color="red">Hero bets $11.50</font>, MP2 calls $11.50

River: ($36) 8[img]/images/graemlins/club.gif[/img] (2 Players)
<font color="red">MP2 bets $17.00</font>, <font color="red">Hero ???