Villain was 40/30 after 10 hands, BTN completely unknown.

It seems really hard for villain to have a fullhouse here, since he would cbet all his sets close to 100%. On the river I thought I would let him bluff his busted draws, but then he bets half pot and in my experience that makes it a lot less likely that hes bluffing. A 3 can definitely be in his range, assuming a somewhat questionable turncall, so I went ahead and folded.