Do you stop her

NO!!

She starts to push in and you expect it to be excruciating but it doesn't hurt one bit not at all, but what you are shocked about is how amazing it feels to be so full! I mean you had imagined it would feel great but this a whole new level of sensation. You've came already many times and Sarah says “really already? again? I'm not even 1 foot into you yet, I want you to keep track of how many times you cum from just me getting all the way into you.”