As pairs go it's not much - J3s

[MAxx]

I like it too. My thoughts are that you have him beat or he has a big hand. I think you have to call the river as you have induced a bluff. I dont think he has a flush, b/c no flop raise. I dont think he has a straight because he would have prolly raised with those cards. I think if he caught a peace of the flop he'd usually raise. Most likely hand that you'd loose to in my opinin, is a deceptivley played big pair or less likely a 10 that was waiting to raise the turn. This is kinda speculation, but I think you played the hand real well.