Make him pull out
From Create Your Own Story
You start to push him out, exclaiming "You can't come inside me!"
He resists your efforts to dislodge him, "I really can't control myself! Fuck, it's so good! And... your cunt is so awesome!" A small blush creeps up on you, and you feel the shame of what you're doing return. It seems like Bobby's ecstasy has far over-powered his shame.
"Just breathe for a second," you coach him, "then you can blow your load on my belly."
"But you insisted on... you know, helping me."
"You are already far more experienced than you were twenty minutes ago." You point out. "Yes, I really wanted to help you, but I'm drawing the line at this."
What happens next: