[Carmine]

You give no postflop reads on villain so hard to give a real solid response but if you are not going to call the river then may as well fold to the turn cap. If he has a set it's going to be 8's (most likely)and his turn cap tells me he has no fear of you holding a higher set. I put him on a flopped str8 and you're drawing dead. Even if it is only a set of 8's you don't have the odds to draw to your set.

Wait. One other likely hand for him is QJ which will also be willing to cap this turn knowing how unlikely it would be for you to hold QQ/JJ. So I guess you played it right cause you have the odds to draw to counterfeit his hand. I have no problem with the river fold. It's calling the turn cap I'm just a little vague on