Folding preflop is probably best, but I don't think limping is terrible.

On the flop I like the initial raise here, it gets you the information you need. Your raise basically is asking the question, do you have it? He comes over the top which means yes. Now you have to decide if you believe him. In this situation with no prior reads I would. The small preflop raise indicates a stronger hand that wants action, same with the smallish flop bet. He has played this hand exactly like an overpair, there isn't much else I can see him playing this way. So in my opinion you must fold here, and probably should have just folded preflop to begin with.