Sirius, Remus and Peter lock James and Lily in a tower over Christmas Break. They don't have anything except a bit of food and the passion within themselves. And right now, they're just letting it out.
Remus and Sirius overhear Lily and James having some... trouble upstairs.
When you were a child, did you ever play pretend? That you were a princess that lived in a castle? That Prince Charming would come day and sweep you off your feet? I was a Princess, and I had a Prince Charming. He just didn't know it.