3 bet on the river with the 2nd nut flush

[CappyAA]

If villain had the same stack size you did here, I'd just call this, but it looks like he only has $13 more. I think I just put him all in on this river. You're obviously not laying this hand down. This could be done with any flush lower than yours or even a straight (since there is 4 to a straight on the board).