Villain is 22/14/2.4, 5% 3b. He's a reg at 50nl and 100nl and i have a 885 hands on him.

PFR is a 22/17/2.6 (2.7k hands) reg who's stats when he made the raise were 9/6 after 45 hands.

I didnt 3b coz he was playing so nitty and I had position.

Whats the best play here?

No-Limit Hold'em, $0.50 BB (6 handed) - Hold'em Manager Converter Tool from FlopTurnRiver.com

Button ($50)
SB ($68.20)
BB ($231.16)
UTG ($93.11)
MP ($50)
Hero (CO) ($52.25)

Preflop: Hero is CO with J, J
1 fold, MP bets $1.75, Hero calls $1.75, Button calls $1.75, 2 folds

Flop: ($6) 7, 6, 3 (3 players)
MP bets $3, Hero calls $3, Button raises $13.25, 1 fold, Hero ??