The villain may be out of line pre-flop but post-flop he seems to be playing pretty openly, and since you have to assume he'll be a conventional player since you have no reads, why did you refuse to believe (or challenge) his bets? Why would AA or AK not be in your thoughts? You have gone all in with TPGK on a paired board with a king on the turn against a villain who has shown explicit strength from the off.