[Smurph64]

I think you make a false assumption here though. From his perspective there is no way you are going to think he is betting with a lousy third best pair.

And honestly there is no reason to suggest that you will not bet out with a better hand than he had on the turn. So his play was a semi bluff steal not a I have the best hand here and I want more money in the pot.

He wants to win it now, not at a showdown. Showdown value of his hand is crap. How can he get you to fold? Donk it is a good choice.

Less expensive than a check/raise still has some showdown or fold equity and a draw if you call and it's a pretty clear fold if you raise it.

I think it worked out perfectly because of what the holdings were, but I am pretty sure neither of you put each other on what you actually had.