1/3 NL game. Effective stacks $350. Villain is an unknown to me, older white guy. Has been playing fairly aggressive. Haven't seen him open too wide, but he has been 3! preflop and raising postflop more than anyone else at the table. Has also been sticky postflop and rarely folds to a c-bet. Have only seen him caught bluffing once, but he has made several moves that I thought were likely bluffs, but didn't get called.
The relevant bluffing hand, he limped in EP, a few others limped, I overlimped A4s. I flopped top pair and NFD. He led out on the flop, I called. Led out on the turn, I called. River brought in the flush and he instajammed a little over a PSB. I called and he asked if I have the flush. I showed my hand and he mucked, so I didn't get to see what he was bluffing with. He left the table after that hand and came back a few hours later. Now been playing again for several hours.
Villain limps UTG, folds to me in the cutoff, I raise to $12 with K♦ K♥ . BB calls, Villain calls. Pot is $37.
Flop is Q♥ T♥ 5♥. Checks to me, I bet $25, BB folds, Villain calls. Pot is $87.
Turn is 7♣ . Villain checks, I bet $55, Villain calls. Pot is $197.
River is 4♦ . Villain instantly pushes in a stack of $5 chips, which turns out to be $95.
Am I right in thinking that his range is pretty polarized in this spot? He either flopped the nut flush or he has a hand with the A♥ , maybe A♥ Qx or A♥ Tx, or really any A♥ x hand. I would expect him to raise a smaller flush either on the flop or turn almost always.
Does having the K♥ in my hand change anything? I wouldn't really expect him to bluff any K♥ x hands that I block, and I don't expect him to limp/call AK♥.
There are more unsuited combos of A♥ x, and he would likely open more often with some of the suited combos, and limp/call more of the unsuited combos. So I think I should call here getting 3:1? How would you play this hand?