Backdoored 2 pair, river play

[Pat Southern]

Poker Stars - No Limit Hold'em Cash Game - $1/$2 Blinds - 5 Players - (LegoPoker Hand History Converter)

SB: $211.15
BB: $239.45
Hero (UTG): $230.20
CO: $206.05
BTN: $245.20

Reads: <font color="blue">I have 287 hands on villain he's 20.5/13.5/1.25. I don't know much about him other than that.</font>

Preflop: Hero is dealt 7[img]/images/graemlins/club.gif[/img] 6[img]/images/graemlins/club.gif[/img] (5 Players)
<font color="red">Hero raises to $7.00</font>, 2 folds, SB calls $6.00, BB folds

Flop: ($16) 2[img]/images/graemlins/club.gif[/img] A[img]/images/graemlins/spade.gif[/img] J[img]/images/graemlins/spade.gif[/img] (2 Players)
SB checks, <font color="red">Hero bets $12.00</font>, SB calls $12.00

Turn: ($40) 6[img]/images/graemlins/diamond.gif[/img] (2 Players)
SB checks, Hero checks

River: ($40) 7[img]/images/graemlins/diamond.gif[/img] (2 Players)
<font color="red">SB bets $30.00</font>, Hero...