[Lmn55d]

yea i know his action is consistant with a flush draw, but the fact is I've seen a lot of other random hands take this line. You now beat two pair and all lower sets (yes odd for him to take this line but still possible). He also could have a random jack that was trigger happy on the flop but was intimidated by the threat of putting in 2 big bets with a weaker hand. There's a good chance button will call but not bet so you don't have to have the best hand as much here. Also, sb might have bet out his flush draw as it does look like he has one.