Stars $500k hand w/TP against another big stack

As many other posters have said, he seems to be bullying or on a flush draw. If he has a set of 7s or a better Ace, why the raise? Most good players would call there and hope for another bet on the turn. His reraise all-in looks to be a semi-bluff, but it's still a sticky situation. I call here the majority of the time, and your read on him is so important.

I want to also add that threads like this are why I check this site 10+ times a day. Thank you everyone for what you post, even if it's not popular. There is so much to think about, and 2+2 helps me learn tons!

CALL! (and tell us what happened)