River line check after i get lucky on turn

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villain is why im at the table. runs at an impressive 50/4 with af of .8/1.2/.7 Hud tells me he folds under 50% of the time on all streets. dont really know what to make of it but he thought for ages on the flop and not very much at all on the turn. he wasnt multitabling so guess he was thinking about something. bet a bit less than usual on the turn because of it which i think was a mistake. any ideas? also do i have to fold to a river push? and if i do bet the turn std (44-46) then il have a psb back on the river. can u ever use B/F against this player with a PSB back? any comments welcome

Prima Network No-Limit Hold'em, $2.00 BB (6 handed) Hand History converter Courtesy of PokerZion.com

CO ($259.15)
Button ($192.00)
SB ($352.57)
Hero ($215.95)
UTG ($200.00)
MP ($129.00)

Preflop: Hero is BB with 9[img]/images/graemlins/club.gif[/img], 9[img]/images/graemlins/spade.gif[/img].
UTG calls $2, <font color="#666666">4 folds</font>, <font color="#CC3333">Hero bets $12</font>, UTG calls $8.

Flop: ($23) 3[img]/images/graemlins/club.gif[/img], Q[img]/images/graemlins/heart.gif[/img], 4[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $14</font>, UTG calls $14.

Turn: ($51) 9[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $36</font>, UTG calls $36.

River: ($123) 7[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $60</font>, UTG calls $60.

Final Pot: $243