I think you got your money in right, especially if villain is on a flush draw. You have him beat already and there is only a 1/3 chance he is going to hit.

The only hands that would have you beat on the flop would be a set, but we can probably rule out KK cause he only called you PF and also you are holding one of the kings. Same thing for the Ten. A set of two's seems like the only probable hand that has you beat here. I'm guessing since he won and the turn and river were diamonds that he hit a flush, so calling was def. +EV for you