Consequences of a one night stand Sirius black x reader

Chapter 1

Y/N P.O.V

My cold Y/E/C stayed emotionless as I read over the letter in my hands. This piece of parchment set me free. Trust me I understand how cruel I sound saying that the death of my father is a good thing but well you don't know my father. Had he not be dead the second I finish school I would be shipped off and married to some pure-blood twat. Don't get things wrong, I'm not a blood traitor, muggles are ghastly but I prefer the marrying someone you love type thing. I should be crying there should be a stream of tears cascading down my face but there isn't. I suppose its because as I child I was told crying is weak and a L/N is never weak. 

Obviously, my father was murdered by Lord Voldemort, yes unlike other I do not fear to speak his name. You see fear of a name increases the fear of the thing itself, you will do best to remember that. Father was a death eater and from what I had last summer he had failed Voldemort and was subject to punishment that punishment being death. If I ever see good-old Voldy again I'll have to thank him.

"You okay Y/N?" Severus spoke gently pulling me out of my rather disturbing thoughts. 

"Yes I'm all fine sev. How's the mudblood? Still not speaking to you?" I asked the poor boy. Come to think of it I've always been told what to think maybe I need to change my opinion on the muggles. To answer my question Severus simple bowed his head in shame before shaking it. 

sighing I replied "She'll come around and if not then she's not worth your time." Of course that went in one ear and out the other Severus was truly, madly, deeply in love with Lilly Evans even though she had the hots for James Potter. No-one knew that but I could tell by the look in her eyes every time he literally begs her for a date. 

"PRONGS, your making a fool out of yourself she's never going to like you"

"You're right padfoot she won't like me. She's going to love me, then she'll marry me at 19 and birth my firstborn a year later. I think harry for a boy and well I haven't got one for a girl yet so" 

"Moony have you heard him!"

Rolling my eyes I signalled to sev to leave after all the last thing I wanted is to speak to the oh so famous marauders. The bunch of hits aren't anything but annoying assholes.

"if it isn't L/N" Sirius smirked

I was in no mood for this so I simply replied "what do you want Black" spitting his name with venom. I was very close to the Black brothers however when Sirius was sorted into Gryffindor and I Slytherin our relationship went down hill. 

Black only smirked before looking me up and down "You see L/N we're having a party in our common room since we won the quidditch match, how about you come along and invite that friend of yours" he spoke with content and another emotion I couldn't quite read. 

"Why should I?" I stated in a monotone voice. 

"Hmm we won't prank any Slytherins for the rest of the month and that includes good old snivellous"

"Fine, I'll come" You must think I'm crazy for agreeing to come but it meant that our green house got a month of no pranks something we haven't had in years. Whats the worst that could happen? It's not like I'll reveal my small crush on Sirius and have things go down hill!