deep w/ NFD and he's repping top set

[Ribbo]

I think it's a set most times here.
It's such a draw heavy flop that the guy betting $180 on the flop expects to be called, after all he bet into 3 people. Since you have the nut flush draw he isn't betting that, so the only hand that plays that flop so hard is a set. Could be JJTT, at absolute worse it's maybe AKQT. I think you have 8 outs here which isn't enough to call heads up, if you were 3 ways then sure.