This is a smut chapter, sexual and rough ;) I've never done this before so it's okay for me if it's bad or not really good. To be honest, I was proud of this chapter ;). Enjoy.

Remember when I said I'll never write smuts? Well I will never again, this is just a test out.

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Sirius and you are nothing but sex buddy, you have been screwing with him for months but of course it's a secret between you and him. Basically, you guys just know each other for sex and stress reliever, like you are his antidotes and he is yours.

You had Charms this morning, it was not going as planned, it was terrible just because you couldn't succeed a medium rate spell, you walking heavily across the hall, looking for the black hair boy, Sirius Black.

In class, he noticed your anger, smirking to himself, thinking today was going so well. He decided to disappear, making her anger rises to the top, then appeared at a place he thinks she would be.

" Black! I need you now! " you said full of anger yet disappointed, pulling him by his collar then let go, you walked towards a corner with Sirius behind you, smirking deviously.

" Now, calm down little (Y/L/N), do you really want me to do it now? " he said, acting innocent but she knows his game too well to be tricked.

" Yes, now... I bet you planned this, Black? Making me failing Charms, just for this? You have been bad..." you asked licking your lips, pushing him to the wooden wall, breathing sexually into his ears then sucking his neck, he groans in reply.

" You sure know me well " he said pushing you away then drag you into his room, locked it then put a silence charm around the room.

" Let's play, shall we? " he said, not waiting for your answer, pushing you down into the bed, removing your robes and shirt, revealing your bra and cleavages.

He smirk, kissing your breasts then travel from there to your ears, sucking the back of it roughly. He has never been gentle to you, ever... which makes you want him more, and your bossy personality and flaming hot body making you his best subject to learned and practice.

You let out a soft moan, then you pushed him against the bed, kissing his jaw and shoulders to his neck and earlobes, leaving a trail of purple blue-ish love bites on him. While you do that, your right hand was palming the outside of his boxers, making him bite his lips as you do so, he grabs your hair, making it as messy than it already  is.

After both of you we're messing around with each other, you and him were all bare for each other to see, he massages your boobs then lick your nipples, making it hard from his touch. You rubs your hand up and down his erected 'guy', making him moan loudly as he speaks your name.

" Looks like you're enjoying it, Black " you smirk

" I am.... " he smirk back, shoving a finger inside your wet pussy, without warning, you moan as loud as possible, surprised at his sudden action, but you couldn't be mad, all you feel is pleasures and sure you want more.

" Black... ahh " you called his name while moaning, making him groans and harshly pushing his fingers in and out of you, he give you no chance of talking.

" I-Imma, ahhhh " you said arching your back, you cum all over his fingers, he smirk at you, licking them clean then lick your pussy, whirling his hot tongue across your clit, making you goes insane. When he finished, you climbed over him, grabbed his dick then running your hands up and down.

" Ahh... do it already " he groans, moaning, then grabbed your hair, pushing your head up and down his private part, you grabbed his balls, massaging them and sucking his dick, he finally reached his climax, then cum into your mouth and you swallow all of his juices.

He pull out a condom, put it on his dick running up and down as you were waiting smirking at the sight of him.

He bend down to you, face to face, he whisper to your ear, his hot breath was right next to your neck, create a chill running down your spine.

" (Y/L/N), you better pray... causing it's going to be rough " he said, making you feel weak, the last time he said that, you can barely walk on your feet.

" Accio, chains! " he shouted

" Wait what! " you yelled but he has already tied your hands with it then attached it to the bed. He study your body hungrily, eyes went up and down on you then run his finger on your stomach lightly, making you twitch.

He bite your neck then kissed your lips and down to your boobs, leaving a trail on your body, almost bleeding. You yelled out in pleasure but then he smack you butt, making you gasped. He gently put his finger to your lips

" Shhh.... no moaning sweetheart " he looked at you and said in a cold tone

You nodded in obedience, he smirk then continued

He spread out your legs, putting his dick right outside your wet entrance

" Said you want me, (Y/N) "

" I- ahh! " he smacked you in your ass, making you yelp

" Talk quick or I'll hit you again, you enjoy that hmm? " he said then smack your ass again, printing his handprint on you red butt.

" I- "

Smack!

" Want "

Smack!

" you... ah! "

Smack!

He smirk then kissed you

" Good girl... "

He pressed his private part into you making you moan, when he fully in you, you need time to get used to his size, or else it's going to hurt.

But he wasn't waiting, at the moment he push in, he continued to pumped it in and out of you like a machines, strong and continuously. You yelled out, begging him to pull out the chains, he looked at your face then let your hands free, after that, you quickly wrap your arms around him, digging your fingernails into his bare back, making him groans, you moaning his name as loud as possible as he murmur you name sexually...

For a while, you reach your climax but he said to you

" Don't... "

You obeyed him like a dog under his nose, holding your climax in driving you crazy, every thrust of his were strong as it hits your spot several times

" Black... I can't- "

" Me too babe.... lets cum together "

He said then you and him both cum, he cum into you as you arching your back and dug your fingernails into his back, leaving some rough love marks on his lower back and shoulders.

You both lying on the bed, breathing heavily, resting for five minutes. Then you put on clothes as he did the same.

" That's was awesome " you said, quick peck on his lips

" You did well little (Y/L/N) " he smirks " when you were moaning my name like that "

You blushed then turned away, hiding your face.

" Do you want to make this official? " he asked

" What? Our love making sessions? "

" No, you and my relationship, you want to be my girlfriend? "

" Really? " you said looking up to him, meeting his eyes

" Yes "

" Please..., that is obviously a yes, I kinda like you, like a romantic way not... you know what "

" Me too... maybe that's why I love screwing you so much " he joked

You laughed then punched him lightly on the shoulder.

Both of you walks towards the door, hearing voices outside, you opened the door to see James with Lily.

" Weeeeee!um uh... " James said, trying to think of an excuse

" I know what you mean " Sirius said " Well I'll be going now, see you " he said to you

" Wait! I'm coming! " James yelled after him then runs towards the boy

You were there with Lily, who was looking at you and smirk.

" I suppose that was a really good sex " said Lily to you

" Yeah, it is. And another thing happens that's even better... " you smile at her then giggles, couldn't get the image of his out of your mind.