Ask her if you can cum on her belly
From Create Your Own Story
"I guess so," she says. Her body is already next to yours, so all you have to do is turn your hips a little, and your member is dangling over the soft skin of her stomach. You stroke yourself a little faster, letting your eyes roam over her body until they rest on the little raised mound pressing against the fabric of her panties right between her legs. You can only imagine how great it would feel to sink yourself into her, watch her face draw up in moans of pleasure, and you're suddenly there.
You gasp loud, and spurt across her stomach. She jumps, but then giggles as you shoot a second stringy load across her belly. By the time you've stroked out a third and fourth onto her, you're spent. You collapse backwards and try to catch your breath.
Melanie reaches over you and picks up your own shirt, then cleans herself off. You're too worn out to argue, so you let her.
"Now go to sleep," she says, rolling over and pressing her back to you. You drift off to sleep, dick still in your hand.