"I have something for you, Moony," Sirius whispered. "But I can't give it to you here."
Remus smiled and let Sirius lead him up to the seventh floor of the castle.
"That tapestry is hideous," Remus said. "Where now?"
"Keep walking. Third time past ... there! The room appears when you really need it."
Sirius opened the door. The room was dark. Sirius pulled Remus inside and into his arms. They kissed for a while. Remus started to unfasten Sirius's robes.
The lights came on and twenty voices yelled, "Surprise!"
"I needed a place to have your birthday party," Sirius said and kissed Remus one more time.