he's calling any flush he's confident enough to bet river with, could also have lower FH or total air sometimes
given your read that he most likely didnt have a FH there or a hand thats ahead of u, looks like often he's gonna fold when u shove over that river bete and when he calls he'll have mostly flushs and sometimes a hand like 88 where your read is off?
if poker is dangerous to them i would rank sports betting as a Kodiak grizzly bear who smells blood after you just threw a javelin into his cub - RaiNKhAN