Opponent is pretty TAG, thought this was kind of interesting, but may be not. Is calling this river suicide?

PokerStars No-Limit Hold'em, $2 BB (6 handed) converter

CO ($189.80)
Button ($312.95)
SB ($83.05)
Hero ($253.65)
UTG ($66)
MP ($253)

Preflop: Hero is BB with 9[img]/images/graemlins/spade.gif[/img], 4[img]/images/graemlins/club.gif[/img].
<font color="#666666">2 folds</font>, CO calls $2, <font color="#666666">2 folds</font>, Hero checks.

Flop: ($5) 8[img]/images/graemlins/club.gif[/img], 3[img]/images/graemlins/club.gif[/img], 9[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">CO bets $2</font>, Hero calls $2.

Turn: ($9) 6[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $7</font>, CO calls $7.

River: ($23) J[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">CO bets $14</font>, Hero calls $14.

Final Pot: $51