folded top 2 pair on runner runnered 1 card straight board

villain is 54/9 over 50 some odd hands
flopping top 2 i bet it on each street but the ridiculous push overtop on the river looked like instah fold

should hero have checked on river? i put him on KJ or TJ or KX and bluffed on the end. Advice on all streets appreciated ty =D

Party Poker No-Limit Hold'em, $ Hero (6 max, 6 handed) converter

saw flop|<font color="#C00000">saw showdown</font>

CO ($48.55)
Button ($28.70)
SB ($19.30)
Hero ($50.01)
UTG ($50.29)
MP ($11.05)

Preflop: Hero is BB with K[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/heart.gif[/img]. SB posts a blind of $0.10.
UTG calls $0.25, <font color="#666666">1 fold</font>, <font color="#CC3333">CO raises to $1</font>, <font color="#666666">2 folds</font>, Hero calls $0.75, UTG calls $0.75.

Flop: ($3.10) Q[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/heart.gif[/img], 4[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets $2</font>, UTG folds, CO calls $2.

Turn: ($7.10) 9[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $4</font>, CO calls $4.

River: ($15.10) T[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $10</font>, Hero folds.

Final Pot: $25.10