JJ overpair vs. 3 bet

Villain is 18/8/22 over 160 hands - and seems ok - at least smart enough to lay down an overpair to a flush. I guess I should fold to the 3bet but I didn't think they had anything - an overpair at best. But then my only move is to bluff the turn right? This may be chip spew. Fold flop?

***** Hand History for Game 4657273832 *****
0/0 Texas Hold'em Game Table (NL) - Tue Jul 04 22:50:31 EDT 2006
Table The Sahara (Real Money) -- Seat 1 is the button
Total number of players : 6
Seat 1: Nolimit1971 ( $217.15)
Seat 2: Glee1969 ( $25.45)
Seat 3: Hero ( $100)
Seat 4: Surly_Duff ( $152)
Seat 5: sm1932 ( $137.80)
Seat 6: Villain ( $89.65)
Glee1969 posts small blind (0.50)
Hero posts big blind (1)
** Dealing down cards **
Dealt to Hero [ Jc, Js ]
Surly_Duff folds.
sm1932 folds.
Villain raises (4) to 4
Nolimit1971 folds.
Glee1969 folds.
Hero calls (3)
** Dealing Flop ** : [ 3d, 3h, 8h ]
Hero checks.
Villain bets (6)
Hero raises (18) to 18
Villain raises (24) to 30
Hero calls (12)
** Dealing Turn ** : [ 6h ]
Hero bets (66)
Hero is all-In.

Fold when he min-reraises. As it stands a turn shove is fine.