(So my AU is that at a certain time of the month he will be more in touch with Chernbog, therefore he is more needy for attention and also grows a tail, which looks like a lion's tail. He also purrs)

He opens the door to your room, goes inside your room, and shuts your door. He walks over to your bed where you are laying down, and climbs in next to you, cuddling into you.