Kim stops at the door

As you keep fucking her hard you look up to the table by the bed. On it you can see a mirror and in the mirror...

You can hardly believe it but it seems Kim has been desturbed by the noise you two are making and is now standing in the doorway staring, naked except for a towel. The sight makes you grind your hips harder.

She hasn't said anything but you think that expression on her face is shock.