J9 s on button flops flush draw faces raise?

[Arjonius]

Also, when you decided to 3bet, what was your plan if he 4bet pre-?

After you get check-raised, it's a relatively easy fold. You're only ahead of complete air, your flush draw has to call 1.86 to win 3.18 so you don't have pot odds, your flush doesn't have to be good even if you hit it, and since you only have 1.27 more into a pot that would be 4.45, shoving has little fold equity which contributes to it quite likely having a substantial -EV.

[Icanhastreebet]

Also, when you decided to 3bet, what was your plan if he 4bet pre-?

After you get check-raised, it's a relatively easy fold. You're only ahead of complete air, your flush draw has to call 1.86 to win 3.18 so you don't have pot odds, your flush doesn't have to be good even if you hit it, and since you only have 1.27 more into a pot that would be 4.45, shoving has little fold equity which contributes to it quite likely having a substantial -EV.

We raised pre, not 3b.