What if Sirius woke up in the dorm at Hogwarts to hear crying. He was intrigued so he rubbed the sleep out his eyes and sat up. Slowly he looked around and found where the noise came from.
He noticed it was from Remus. He got up and went to his bed. He ran his fingers through Remus' hair as he laid down next to him. He wrapped his free arm around his boyfriends waist and Remus gradually calmed down.
15 mins later
He had finished crying and was now turning into Sirius' chest and cuddled up close. He looked into Sirius' eyes and kissed him. They kissed for a few moments just giving off their love for eachother.
When they released Remus put his head in Sirius' chest and entwined their hands together. He fell asleep happy and content that Sirius was there for him again.
Whereas Sirius fell asleep happy because he saw Remus smiling on his chest. He pulled Remus closer and kissed his head. They fell asleep together like that. Happy in eachothers arms.