50nl 85 flops 2pair, nasty board - river desicion vs passive player

[danny8]

Full Tilt Poker - No Limit Hold'em Cash Game - $0.25/$0.50 Blinds - 6 Players - (LegoPoker HH Converter)

SB: $36.85
<font color="black">Hero (BB): $68.40</font>
UTG: $50.00
MP: $24.35
CO: $14.50
BTN: $52.75

<font color="black">Reads: </font><font color="blue">villains 38/13/1.5 (100) havnt noticed much.. seems like your average Loose-passive guy</font>

<font color="black">Preflop:</font> Hero is dealt 8[img]/images/graemlins/spade.gif[/img] 5[img]/images/graemlins/club.gif[/img] (6 Players)
UTG folds, MP calls $0.50, CO calls $0.50, BTN calls $0.50, SB calls $0.25, Hero checks

<font color="black">Flop:</font> ($2.50) 8[img]/images/graemlins/diamond.gif[/img] 5[img]/images/graemlins/heart.gif[/img] T[img]/images/graemlins/club.gif[/img] (5 Players)
SB checks, <font color="red">Hero bets $2.50</font>, MP calls $2.50, 3 folds

<font color="black">Turn:</font> ($7.50) 7[img]/images/graemlins/spade.gif[/img] (2 Players)
<font color="red">Hero bets $5.50</font>, MP calls $5.50

<font color="black">River:</font> ($18.50) J[img]/images/graemlins/spade.gif[/img] (2 Players)
Hero...


villain has ~$16 left, do i just push, c/c or c/f?

i was a little lost here, any feedback welcome, cheers!