Flopping nut straight with a flush draw on the board

[Hans Gruber]

After I pushed all-in, UTG pondered for a while, and he pushed all-in for his last ~$75. Then the MP sat and pondered for a while, and he called. The turn was a 2d, and the river was a 3s.

UTG showed 8d8h for a set
MP showed As5s for a flush
I mucked my straight, MP took down the $230 pot.

So, in hindsight I wonder what a pot-sized raise would have done. I now believe that was the correct play. But if the UTG with the set reraised all-in, I wonder what MP would have done with his flush draw. But if UTG just called my pot-sized raise, and the flush draw called, would MP have folded his draw on the turn with a big bet by either me or UTG?

Once both the UTG and I were all-in, MP was getting 2:1 on a flush draw with two cards to come, which is good enough to call the all-ins.

Tough hand for me, but I think there was at least a chance that I could have won the pot if I hadn't pushed...