NL50 AJ 3bet...

[Babalatexi]

"Villian is is tight passive. 20/3/1..."

As mentioned, folding pf isn't bad but as played, I don't mind a flop bet, easy to fold to a raise from this player and we get value from the two hands we beat. Checking would be fine as well. On the turn I'm definitely checking behind, he's not calling QQ/JJ here. I probably fold to a river bet from a villain with these stats unless it's very small, he's not betting QQ/JJ there and we really don't beat anything else.