You have 15:40, right? Since his stack is so small he'll probably go all-in on the turn and you only have 1:4 chance of spiking your nut flush, he IS committed however and will probably not fold so you should get the other $35 from him a fair amount of time... let's say you get on average $20 from it (he might have a set and boat up, and he might fold to the flush), that would give you 15:60 which is exactly what you need
That's how stupid MY math is. Obviously you need to factor in the fact that you'll lose your stack when you hit your flush and he boats up.
Unlike most other cases, this is a fold or call rather than raise or fold, or raise or call I think, since you have no fold equity. I think folding is right, you tried a semibluff and got caught, he's not giving you the odds to chase, so you should release.
