two pair vs flush chaser

[humiliation]

need your opinion on this hand, particularly river play. i wasnt happy about calling but felt like i had to. i really didnt think he was chasing because he was solid for the past 100 hands.

Party Poker No-Limit Hold'em, $ BB (9 handed) FTR converter on zerodivide.cx

UTG ($144.84)
UTG+1 ($59.29)
MP1 ($77)
Hero ($141.25)
MP3 ($100.90)
CO ($76.50)
Button ($142.03)
SB ($83.90)
BB ($106.50)

Preflop: Hero is MP2 with A[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/heart.gif[/img]. SB posts a blind of $0.50.
2 folds</font>, MP1 calls $1, Hero calls $1, 4 folds</font>, BB checks.

Flop: ($3.50) 5[img]/images/graemlins/club.gif[/img], J[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/diamond.gif[/img] (3 players)
BB bets $1, MP1 raises to $4,Hero raises to $12, BB folds, MP1 calls $8.

Turn: ($28.50) 2[img]/images/graemlins/diamond.gif[/img] (2 players)
MP1 checks, Hero bets $17, MP1 calls $17.

River: ($62.50) 9[img]/images/graemlins/club.gif[/img] (2 players)
MP1 bets $25, Hero calls $25.

Final Pot: $112.50