Sirius was more than a little confused and concerned at Remus' reaction. He seemed almost afraid to be left alone with Sirius.
Sirius wasn't going to call Remus on it, though. The last thing he wanted to do was to ruin a potentially lovely Christmas, especially when he knew Remus was already disappointed by Gilbert. He stood up and gestured for Remus to lead the way. "If you're sure, Moony..."