Party $500K hand

[m1illion]

Isn't this one of those times when betting at a single suited flop gets caught flapping in the wind?
I mean, what can you do to get more info here?
If you check the turn, he bets the river and you know no more than before.
If you bet the turn less than a push, he's going to call because a) he got the made flush and b) you look weak with an under bet and c) he still getting odds to make the one card flush(right?). So no information is actually gained here.
Finally if you push he calls and your out.
I don't see how you can stay out of harms way other than check folding to the inevitable river bet.
Doesn't this just come with the territory of aggressively betting this type of flop? Sometimes they do have it.