[jhall23]

Live I'd have to go with my feel for the guy and the situation. Often the quick/loud all in isn't really that strong but can be player dependent. You are about in the same bad shape against a flush as you are against a set of 3's and you are about 17-19%. Getting 2.7:1 you need to win ~27% of the time, so if you feel he makes this move with a lone heart or less often enough to make up for it call. I'd give him a look and see how relaxed he seems. If there is any hint he is not super comfortable I call. I may call anyway.