[[Phill]]

I bet here because i bet with A8, AdX a set and a made flush.

Im somewhat aggro.

If villain calls then you need to evaluate the turn, but basically the villain needs to have a strong made hand or a big diamond to continue and that isnt going to happen often in general.

Fwiw its true that hitting a flush isnt a lock on the showdown, but its a pretty good chunk of equity you would otherwise not have. There is a good argument that you shouldnt bet this flop without a diamond though imo that all comes down to the flow of the game and the villain's tendancies at the time.