PokerStars No-Limit Hold'em, $6 BB (6 handed) Poker-Stars Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

CO ($1329.60)
Button ($600)
SB ($636)
BB ($600)
UTG ($609)
Hero ($716)

Preflop: Hero is MP with J, J.
UTG raises to $18, Hero calls $18, 4 folds.

Flop: ($45) 5, 6, 7 (2 players)
UTG bets $36, Hero calls $36.

Turn: ($117) K (2 players)
UTG bets $84, Hero calls $84.

River: ($285) 2 (2 players)
UTG bets $234, Hero ????

Villain is www.BTHERE.com, a good aggro reg imo. He is like 25/20/4, but against me he has been pretty conservative this session. Do I call river?