Sirius was your younger brother.

And he was cute when he needed to be - especially when you two had gotten back from Hogwarts, to Grimmauld Place for the summer holidays. Of course, not automatically, not until he'd been punished by your mother and needed some patching up done by you afterwards, his skin littered with cuts and bruises. It took a while, since he was getting older and that definitely gave Walburga more hit points on his arms and legs, with the height he was gaining, even if he was only fifteen. To take his mind off of it, you made some hot chocolate and sat by the window in your room, which was further down the hall, covered in (your house inserted here) pride. You two were talking, until you brought up the subject of Remus, which made him go red in the face. Of course, you noticed, and might've suggested a thing or two; which he denied. "I don't have a crush on him!" He spluttered, even with his cheeks pink as a peach.