nut straight on monotone flop

This hand was terribly played. At what point do I let this go? It felt like a sin to drop it on the flop, the turn tiny raise was begging a call, and by the river it was a tiny bet. Yuck

Edit: villain is 36/20 and normal aggression. nothing stupid from him so far.
Edit2: 50NL. converter is bad.

PokerRoom No-Limit Hold'em, $1 BB (5 handed) internettexasholdem.com

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

SB ($21.55)
BB ($41.70)
<font color="#C00000">UTG ($50.10)</font>
<font color="#C00000">Hero ($60.25)</font>
Button ($22.85)

Preflop: Hero is MP with K[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/diamond.gif[/img].
UTG calls $0.50, <font color="#CC3333">Hero raises to $2.5</font>, <font color="#666666">2 folds</font>, BB calls $2, UTG calls $2.

Flop: ($7.75) J[img]/images/graemlins/heart.gif[/img], Q[img]/images/graemlins/heart.gif[/img], T[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, UTG checks, <font color="#CC3333">Hero bets $7</font>, BB calls $7, <font color="#CC3333">UTG raises to $14</font>, Hero calls $7, BB folds.

Turn: ($42.75) 5[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">UTG bets $5</font>, Hero calls $5.

River: ($52.75) 7[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">UTG bets $28.6 (All-In)</font>, Hero calls $28.60.

Final Pot: $109.95