It was early Friday morning at Hogwarts. It was the first class of the day, McGonagal’s class. James and Remus were trying not to crack up out loud at the fact that both your and Sirius’ seats were empty. McGonagal started role call
McGonagal: “Mr. Black?”
no answer. She repeats but no answer. She sighs and keeps moving down the list. She reaches you
McGonagal: “Ms. Evans?”
No response. She sighs and looks up at James and Remus
McGonagal: “Where are they?”
In response Remus and James just crack up laughing
Meanwhile upstairs in the Gryffindor dorms you and Sirius were in bed only partially naked. You still had on underwear and a shirt and he still had on sweatpants. You were asleep when he woke up and gently started rubbing your shoulders
Sirius: “Morning starlight”