Betting with an overcard

[AdamBragar]

I get into this type of hand all the time with varying results. Please critique my play...

.25/.5 NL

UTG+1(45) raises to $1.50, MP (25) calls, folded to me in CO with JJ.

I have them both covered. I raise $4. They both call, 3 to the flop.

Flop: A [img]/images/graemlins/spade.gif[/img] 5 [img]/images/graemlins/heart.gif[/img] 10 [img]/images/graemlins/diamond.gif[/img]

Checked to me. Should I bet this? Well, I don't, I check.

Turn: 9 [img]/images/graemlins/diamond.gif[/img]

Checked to me again. Should I bet this? I do. I bet $7.50. UTG+1 calls, MP folds.

River: 2 [img]/images/graemlins/heart.gif[/img]

Checked to me. This is the bigger question. Do I bet here? What could UTG+1 possibly have?

All comments greatly appreciated.