Start to work up a rhythm. You don’t know it yet, but he is getting close.
Soon you will be able to tell when a man is getting close and you will instinctively jump into action. But today I will help warn you.
When he’s past the point of no return you have one to two strokes/seconds max before his cum starts to pour out. So you will need to move fast.
Cum belongs on you not in your pussy. Getting pregnant is a real drag on being a bimbo.