On her chest.

You do as she asks and pull your dick out of her pussy. You move up a bit so you're straddling her belly with your dick laying across her tits. She pushes her boobs together to try to let you tittyfuck her, but it's not really working. You take hold of your cock and jerk yourself to a finish, exploding all over her chest.

You fall backwards, panting like a dog. After a few seconds, you pull yourself upright, and collapse on top of her, face to face, your cum smearing between your chest and hers. You and Doe have a long, passionate kiss, after which she reaches down to your cum, gets some on her finger, and sucks it off, then swallows it.

You continued doing this every night in the hotel. When you went back home, you would still regularly meet up to ravage each other. Eventually, you grew apart, found other people, and moved on. But you never forgot those days of passion and lust.