3betting this flop in conjuction with checking turn makes no sense...

your villain seems very nitty indeed postflop, only 8% flop raises means its pretty much always the nuts, and he has alot of nuts in his range since he only 3bets 2.5% (slowplay much?) . i think the only draw he would raise is like QJhh. Versus a likely range of KK+,AK, 88 you're crushed here. In reality I just peel one and fold non-heart non-8 turns vs him, but the correct play might be just to fold flop if he's that nutted and we're oop.

Also if u think ppl have air here this is the nut hand on this board to call his 3bet with and c/c turns and some rivers and let him bluff hearts for example. It protects your range quite well too. I'd do this vs regs that chronically bluff raise flops.