The moment it was clear Remus had made good his escape, Peter dashed away, sticking close to the wall to minimise his chances of being spotted. He knew these hallways like the back of his hand, and deliberately chose the gloomiest routes until he could safely transform back into himself. Double-checking the map to ensure he wasn't about to walk into anyone he wouldn't like to encounter alone, he strolled off, slightly pink in the face with exertion and delight, in the direction of the dorms.
Quite close to the entrance, he rounded the corner and came across Remus again. With a grin, he asked, "Hey there, Moony. Having a good day, are you?" Quite as if nothing had ever happened.