"Get the fuck away from me" he spits. His eyes are cold.
Remus doesn't move. Sirius swears loudly, flicking his cigarette away. "Get the fuck out, Remus. It isn't a joke this time."
Remus laughs anyway.
Sirius catches his arms harshly and pulls him into a bruising kiss.
When he pulls away he whispers, low and dangerous, "You'd better leave before I make you."
Remus knows that he's never going to forget this moment. He'll feel the bruising grip on his arms forever. He'll feel him there each time he touches his lips. He'll see it in his eyes every time he looks in a mirror.
But it doesn't matter, because he doesn't want to forget. Ever.
He leaves quietly.