A Lingering Season

It's cuffing season and James and Lily have finally warmed up to each other. Or have they? Lily can't quite wrap her head around James and his roommate, Sirius. Or around Sirius and his...partner Remus? Or around her relationship with James and where it's headed? All she knows is that it's cold outside. And it's warm in James' bed. Muggle A/U.