I would fold.

Villain could easily be fast-playing a set or hit two pair out of the BB. If he had AA or KK I think he would have re-raised pre-flop. The only thing you are beating is AT, JJ or perhaps 99, but 99 and AT seem like a stretch. Although he is very loose, you can only call if you think he makes this move (after he's seen you raise UTG and raise his flop-bet) with a bluff/JJ/TPTK.

Find a better spot to stack him