NL100 flopped set facing scary line by opponent

[Hosehound25]

This hand occurred last night in a home game I play in. Villain is somewhat loose and passive preflop, probably something like 45/15, but fairly aggressive postflop. He is an average player overall. It was agreed on that it would be the last orbit of the night, with the game being four handed. Villains stack is roughly $60, I cover.

UTG folds, Button raises to $3, I call in the SB with 6 [img]/images/graemlins/diamond.gif[/img]6 [img]/images/graemlins/club.gif[/img], Villain raises $4 on top, Button calls, I call

Flop: 10 [img]/images/graemlins/club.gif[/img]6 [img]/images/graemlins/spade.gif[/img]3 [img]/images/graemlins/heart.gif[/img]

I check, Villain checks, Button checks

Turn: 8 [img]/images/graemlins/diamond.gif[/img]

I check, Villain bets $6, Button calls $6, I raise $10 on top, Villain moves all in for $33, Button folds, Hero...

The line screams set to me. I have only seen Villain make a move kind of similar to this with AK, but not in a pot as large as this.