Remus had tried a conversation on the way back to their dorm, just simple small talk but Sirius was in a bad mood. It made him wonder if Ian had been right about his friend being jealous. Now they were 'studying' but that really wasn't working either, how could he see if Sirius really felt for him like the DADA professor had suggested when his friend was in such a bad mood?
Finally the young wolf just dropped his book in his lap and looked at Sirius, "What is wrong?"