sketchy overpair

[Jiminy]

Pokerstars 10-20, Villain is Loose, very good player. I have about 2k at the start of the hand, villain covers.


xxxx: posts small blind $10
HERO: posts big blind $20
*** HOLE CARDS ***
Dealt to HERO [Jc Jd]
UTG villain: calls $20
7 folds
HERO: raises $60 to $80
villain: calls $60
*** FLOP *** [4c 2h 8d]
HERO: bets $120
VILLAIN: calls $120
*** TURN *** [4c 2h 8d] [4s]
HERO: bets $120
VILLAIN: raises $300 to $420
HERO: calls $300
*** RIVER *** [4c 2h 8d 4s] [7h]
HERO: checks
VILLAIN: bets $740
Hero????