What to do...

[Gar Pike]

Read on Villain is that he's agressive and tricky.

Hand history is

Hold'em No Limit - Level VII (100/200) Ante 25
Seat 1: MP2 (8375 in chips)
Seat 2: Villain (4815 in chips)
Seat 3: LP2 (3722 in chips)
Seat 4: Button (3935 in chips)
Seat 5: SB (13742 in chips)
Seat 6: Hero (6736 in chips)
Seat 7: UTG (11820 in chips) is sitting out
Seat 8: EP1 (8800 in chips)
Seat 9: MP1 (12535 in chips)
MP2: posts 25
Villian: posts 25
LP2: posts 25
Button: posts 25
SB: posts 25
Hero: posts 25
UTG: posts 25
EP1: posts 25
MP1: posts 25
SB: posts 100
Hero: posts 200
Dealt to Hero [As 7c]
UTG: folds
EP1: calls 200
MP1: calls 200
MP2: folds
Villian: calls 200
LP2: folds
Button: calls 200
SB: calls 100
Hero: checks
(Pot 1425)
*** FLOP *** [4h 6d Jc]
SB: checks
Hero: checks
EP1: checks
MP1: checks
Villian: checks
Button: checks
*** TURN *** [4h 6d Jc] [2h]
SB: checks
Hero: checks
EP1: checks
MP1: checks
Villian: checks
Button: checks
*** RIVER *** [4h 6d Jc 2h] [7h]
SB: checks
Hero: checks
EP1: checks
MP1: checks
Villian: bets 4590 and is all-in
Button: folds
SB: folds
Hero: ???

I'm 80-90% sure this is a bluff. Pot is giving me 1.3:1 to call. Calling and losing hurts, but doesn't kill me.
Last time he slow-played a big pair, he called a pf raise, checked flop, bet turn & river. Also, earlier value bets were more like pot-size. This just looked wrong, like "I really want you-all to fold, you obviously don't like your hands" But, I only have 2nd pair.

What to do...

Regards

Gar