[TwoToGo-Grave]

I really dislike the call pf. You have position, but you are easily dominated with a VERY marginal holding. A king or queen could be disaster for you, and since you invested so much pf, you risk losing a big pot with that marginal hand.
If you called pf, I suppose you feel that you must play top pair on the flop (and you're right), so calling seems fine here. A raise may better define your hand, though.
Checking the turn is just fine.
On the river, are you value betting? Why not check, since it's unlikely that he'll call with anything that you can beat, and he well not fold if he does have you beat. Just check the river.