It's about 3am and James is still up, just turning around in the bed. Still not tired and pretty bored. And horny.
At some point he finally starts putting one hand below the covers to play with himself. Trying not to make too much noise and keep movements to a minimum not to wake Luna.
But after a few minutes of solo fun he just needs more. Moving to the other side of the bed, Luna is about to enjoy a night of intense and wet dreaming.