Pre I'm calling every time. I'm not folding or raising this against any button.
Button's small-ish open - 1.5BB - makes this an easy call, IMO.

Flop is obv. I hit mid pair, and I'm not pushing it up or folding. c/c any sensible bet, here.
Their hand is still pretty concealed if they C-bet in button v blind situations. Even if they don't, they have plenty of draws in this and PP that the 9's beat.

OTT: that 3 sucks for me. Most 3s in my pre-flop range are A3s, and I'd be inclined to 3-bet pre instead of call. Whereas the button steal range has plenty of 3's. I don't think many people at 5NL are double C-betting, so now I'm starting to think he actually likes his hand... and I don't like that my 2-pair is counterfeit by the board pairing, and I don't like that my T blocks his JT combos. I'm reluctantly calling 'cause I don't want to crumble at the first sign of trouble, but I'm feeling more behind than ahead at this point.

OTR: I think I have to c/f. All I have left is a bluff catcher, and he's 3 barreled me after the flop. W/o any read that this player runs a 3 barrel bluff, I'm pretty convinced I'm behind, here.