Dating Regulus Black and being Lily Evans’ sister would include...
TW: Mentions of sex
- You and Lily always had a special bond, unlike you and Petunia.
- When Lily told you she was going away to a magic school, you were upset, to say the least.
- She was your favorite sister (sorry Petunia) and you did not want to wait until Christmas to see her again.
- You can still remember all the way back when she was getting on the Hogwarts express
- At the age of 9, you were confused as to what was happening, but you just knew you were already going to miss her.
- As Lily was saying goodbye to your parents and Petunia, you noticed something going on a few feet away from you
- there was a family of four: a mom and dad, and two sons.
- The older son was trying to get his younger brother to let go of the hug.
- Unlike most of the other parents on the platform, these boy’s parents did not seem upset that their eldest was going away.
- The father put his arms around the youngest son and pulled him off the older son
- The younger son was sobbing
- “I don’t want you to go, Sirius!” He said, loud enough for you to hear
- “I’ll be back for Christmas, Reg. I promise,” The older son replied.
- Before you could hear the rest of the conversation, Lily pulled you into a hug.
- “I’ll see you at Christmas, y/n/n,” she said. “I’ll write to you every chance I get, I swear.”
- After bidding your final goodbyes (Petunia throwing a tantrum and not saying goodbye to Lily, of course.), Lily got on the train.
- As you were walking back to your car, you bumped into the boy, who you now knew as Reg, as you went through the platform
- “Sorry!” You said
- He only groaned in response, still wiping tears from his face.
- As your mother pulled your hand through the crowd and away from Reg, you heard Reg’s mom telling him that his response to you was impolite
- You turned to face him one more time after you got through the platform.
- Wow, he’s cute. you thought
- Two years later, you had gotten your letter to Hogwarts.
- Then, at the ripe old age of 11, was when you and Petunia stopped being sisters.
- But, it was when you and Lily became even closer.
- At Hogwarts, Lily was excited that she finally had her best friend, other than Severus, at school with her.
- She never cared about your house tbh. She loved you no matter what.
- During the first week of school, you met a boy named Reg in your Potions class.
- You remembered him, but you wouldn’t bring that up until years later.
- You had assigned seats next to each other in Potions.
- He called you a mudblood on the first day.
- Then he got a slap in the face from you
- And he apologized, promising to never call you that again.
- This is where your friendship began.
- You had Lily’s feistiness, and he liked that.
- (Although he would never forgive himself for calling you a mudblood. Not even years later. He would never forget how awful of him that was.)
- In fourth year, you developed a crush on a Ravenclaw boy, Luke.
- Lily approved of Luke
- (Which is the best seal of approval you could ask for)
- Luke was handsome
- and kind
- and funny
- and he played quidditch
- and he was a year older
- You reiterated this to your best friend, Reg, practically every day.
- Although Reg never met Luke, he hated him
- Was it jealousy? No. No, Obviously not that. Why would Reg be jealous of some guy just because he has your attention?
- (Yes, it was jealousy.)
- “I wonder if he’ll ask me to the ball,” You said to Reg as you were meant to be studying in the library
- “I don’t know, maybe.” (Reg actually could not care less)
- “Maybe I should ask him. We only have a couple of weeks left until the ball, maybe he’s nervous to ask me.”
- “Have you ever even talked to him, y/n?” Regulus snapped, causing the entirety of the library to look at him and Madam Pince to shush him.
- Reg’s outburst shocked you
- “Actually, I have talked to him, Regulus,” You replied sassily, “Have you?”
- You stared him down for a second
- Only as you stared him down did you really see him for the first time
- His face wore a sneer, his upper lip was lifted, baring his teeth.
- You realized how handsome he was
- his hair was jet black and bone straight, but one unruly hair right at the top of his forehead curled out of its naturally slick state
- He had brown eyes that looked black in the dim light of the library
- He had gotten taller since 3rd year.
- As you were caught up staring at his good looks, Regulus got up and left the table out of anger
- You, obviously, chased after him
- He, having grown to be much taller than you, used his long legs to out-walk you
- “Regulus! Stop!”
- When you finally caught up to him, you grabbed his shoulder to turn and face him.
- He was angry (because not many people ever tried to argue back with him. Or expose him like you did.)
- “What’s your problem, Reg?”
- “That stupid Luke guy, y/n.”
- He mumbled something
- “what?”
- “Nothing.”
- “Speak up, Reg”
- “He. Doesn’t. Deserve. You.”
- This shocked you
- “He’s a tosser, honestly. Always hooking up with girls in the locker rooms. Someone told me that he talked about what he was going to do to you.”
- “What?”
- “Amy, from Ravenclaw. She heard him say something about you. She told a couple of her friends. That’s how I heard. Luke is a manipulative bastard, y/n.”
- This was a lot to process, so you sat down on a bench next to you.
- You knew Reg would never lie to you
- You had to believe him
- But you really liked Luke, and you thought he wasn’t like that
- You were upset, but you didn’t cry.
- Regulus sat down next to you
- You sighed, putting your head on his shoulder
- “Thank you for telling me.”
- “It’s my job isn’t it?”
- “What is?”
- “Keeping you on track.”
- You laughed at this
- “Yes,” You said, “I suppose it is.”
- Let’s just say Reg promised to take you to the ball.
- And he did
- AND YALL KILLED IT
- on the outside, you two were color-coordinated (probably black on black)
- You two looked flawless
- But it was probably the most awkward thing in the world.
- LILY WAS NOT HAPPY WHEN YOU TOLD HER
- It went something like this:
- “Lils, I got a date to the ball!”
- “Really? Luke?”
- “No, turns out Luke is a prick. I’m going with Regulus.”
- “Regulus…Black?”
- “…Yes.”
- “I swear to God, y/n if he hurts you–”
- “Lily, he’s my best friend. He’s not like that.”
- End scene
- Fifth year, you were an official couple
- Lily had to sit down and talk to him
- similar to the way an over-protective dad does to his daughter’s first girlfriend
- She ended up loving him (mainly because he had a similar personality to her best friend, Sev)
- So Lily was the only person that actually knew about your relationship
- Reg wanted to keep it on the down-low because you were a muggle-born and he was a pure-blood
- (Yes, in third year, he learned to say muggle-born instead of m*dblood.)
- Lily was also your number one supporter
- But she was still protective
- If she found out that you and Reg were having sex
- Oh boy
- She’d flip her fucking lid
- Cause, you were her little, pure, innocent, sweet, flowered, sister, right?
- If she ever teased you about you and Reg, you could always fire back about her and James
- And she’d go as red as her hair
- Basically, you had a great relationship with both Lily and Regulus (in different ways)
- Sirius and Regulus would reconnect after Hogwarts due to Lily and Sirius’ close friendship
- Lily would be the maid of honor at your wedding
- Sirius would be best man
- Speaking of the wedding
- It would probably be really informal
- Most likely in your back yard
- You might wear a white dress if you have one in your closet
- Your guests were probably your’s and Lily’s parents, the marauders, a couple of Reg’s friends, and a couple of your closest friends
- You invited Petunia, but she did not come
- Basically, you and Reg had a long and happy life together.





