What is the poker etiquette?
This happened a couple weeks ago at 1/3 live game at MGM national harbor. The villain,UTG, raises big to $30. It folds around to the hero in mp with a pocket 8s. I make the call and it folds around to the original raiser. Thinking everybody folded, the villain turns over pocket AAs. At this point, I am not sure what the ruling should be, but the dealer asked us to just continue to play our hands. To the flop with rainbow board. The villain checks and the hero checks too. The turn brings another 8 to give the hero a set 8s. the villain checks again and what do you do here? I am not sure what is villain's intention here. Does he want to check through the river? Should I bet here or does that make me shady?