♫ Didn't take too long 'fore I found out... What people mean by down and out... Spent my money, took my car... Started tellin' her friends she gonna be a star...♪
Sirius Orion Black was the most stubborn person you've ever met. He barely did any school work (despite being a top student), he was obnoxious, a self proclaimed Casanova, he loathed the fact that his baby brother barely talked to him on a normal basis (talking to him in French doesn't count), and he was obsessed with Muggle music.
And since you're a half-blood and experienced in the Muggle world (you work a summer job at a record and bookstore), he thought it'd be a wonderful idea to try and charm you into telling him the musical genius that is muggle music... though it didn't go exactly as planned.
He wasn't accounting for you to outright say no. At all. So he tried harder. For the past four months he's been bugging (begging) you to teach him how to play guitar... to no avail. He's tried wooing you, tried avoiding you (he couldn't be away for more than 3 hours), tried everything... How hard can a guy try?
He just wouldn't give up, Potter must be rubbing off, and to make it worse now you're sick from the Scottish weather. Confined to your bed and common room. Thus making it easy for him to find you, against your complaints.
So... here you are, sniffling and drinking warm chicken broth with Sirius laying right beside you in his animagus form (you found that out after accidentally walking past a black dog turning into him and embarrassingly seeing him in his birthday suit... ok, so maybe you gave a second glance....).
"Move your tail, Pads. I can't see the movie." You grumble and sniff as he curls his tail over your waist, licking your cheek. He barks and scoots closer.