Party 0.5-1: I botched the river, now what?

[Yerma]

He had K2o, I called his raise and MHIG.

When I bet the river, my plan was to fold if raised. When it actually happened though, I took a look at my note that he calls down w/bottom pair + good kicker on coordinated boards and decided there was some small chance he had 'only' 2 pairs. He really did nearly lift me off of my hand though, and I'm getting a variety of opinions on what I should have done on the river. So, I still don't feel like I know what I should have done. [img]/images/graemlins/confused.gif[/img]