Remus had a good nose and a good imagination but when the scent of Sirius woke him up he knew that one, this was real and two, that is friend had to be really close. He opened his eyes slowly, the sleeping boy next to him looked good enough to eat and again his body reacted. He moved away carefully, he didn't want to wake Sirius but he also needed to get away from the temptation, what ever happened Sirius could not find out what he did to him.
Slowly he sat up and shifted as far away he could without falling of the bed. He rested against the wall at the head of his bed, rearranged his robes to cover the physical evidence of what waking up next to Sirius did to him, he grabbed a book and pretended to read. He wasn't reading of course, he was willing his body to behave for once, breathing slowly and thinking about things that would kill his hardon.