Hi Limit-

If we didn't have the flush draw I'd just call down after the c/r. What I'm arguing is the flush draw presents a compelling reason for a 3-bet, and against most rational players if they 4-bet us we can fold ui. Thus, we're putting in one more bet OCCASIONALLY when behind, if we're ahead on the turn we're making villain put more money in for his draw, and if we're behind and the turn isn't capped and villain doesn't bet the river we see it for the same price and get a 1/5 chance of drawing out with more money in the pot.