I agree w/ what Westley said for the most part, although if 2 more overs, or an A or K spade come I may lay it down if the villian does not slow down...w/ that being said, the way it was played I believe is a clear fold... there isn't a hand in the deck that he played this way that you have beat at this point.... for all we know he slowplayed AA preflop, or like you said, he doesn't raise nearly enough preflop and he may have a set of J's.... I think it's a fold