Flopped baby flush, turn action.

[Matte_Maiden]

NL200. 6-handed. 100 BB deep. Early in the session.
Villian is bad, like 53/7/1. Since it's early in the session my image ain't clear and we have no recent history.

I raise to 7 with 45s UTG+1. Everyone folds to the BB, which is villian. He calls.

Flop comes KJ2, all in my suit. I make a pot-sized bet of 15, which he check-calls.

Turn brings a 3 of another suit, and he check-raises my pot-sized bet of 45 to 110. What does hero do?