Am I supposed to flat call this river?

[Borodog]

Live $5-$10 11 handed. UTG player is good when he wants to be. He can be too loose calling pre- and post-flop, but when he's showing aggression, he's usually got the goods. He runs his mouth too much in hands also.

UTG open raises. I 3-bet with J [img]/images/graemlins/heart.gif[/img]J [img]/images/graemlins/club.gif[/img]. Folds to UTG who 4-bets. I call.

Flop is Q [img]/images/graemlins/spade.gif[/img]J [img]/images/graemlins/spade.gif[/img]T [img]/images/graemlins/diamond.gif[/img].

UTG bets. I raise. UTG 3-bets. I announce, "Cap it," and 4-bet, but UTG reminds me, "Uh huh. Heads up, no cap. 5 bets." Uh oh. I call. UTG says to the dealer, "Dealer, I will pay you $20 to not pair the ****ing board."

Turn is the J [img]/images/graemlins/diamond.gif[/img].

UTG bets. I raise. UTG says, "Goddamnit," and calls.

River is the T [img]/images/graemlins/spade.gif[/img].

UTG bets.