Sirius was leaning on your door frame as you were fast asleep, he thought of when he first met you the moment James introduced him to you, everything changed for him
|Flash back|
"Hey Sirius meet my twin sister y/n." James says and I turn around to be met with this beautiful girl how have I never noticed her before
"Hey beautiful." I say and James glares at me "What?" I say confused and James sighs
"She's not gonna be one of those girls you hookup with and never talk to again, so she's off limits." James says and I sigh
"Fine, hi I'm sirius black." I say and she shakes my hand
"Y/n potter." She says with such a cute smile that I looked at James basically using my face to plead with him and he shakes his head, oh come on she's so cute and beautiful and she's off limits? What? No! This is gonna be torture for me
"Anyways y/n so your best friend lily Evans introduce me to her." James says and I laugh
"Hey I told you already James lily is way out of your league stop trying." I say and y/n sighs
"Shut up Jamie now bye bye boys I am actually meeting lily don't follow me or else I'll kick your knees in." Y/n says and I look at James as y/n walks off, wow I'm starting to like her more and more, like I'd gladly allow her to kick my knees in
"I said NO! You won't ever be with her so don't try! She's my sister and I don't want my best friends dating her, Remus and peter already know your the only one I need to watch." James says wow what little trust in me honestly no clue why he'd think I'd ever disobey him and go for his sister anyways
|Flash back over|
Sirius sighs as he watched you sleep *I had always imagined my future with y/n she's the only girl I saw a future with, and I wish I just stayed with her and Harry when I went over! I wish I didn't go after peter! So then none of this would be happening!*