A/N: Hello all! This is something that I thought of while talking to my really close friend. AU, as I've tweaked a few things.

Disclaimer: I don't own any one that is mentioned except for my OC's *sobs*

"SIRIUS! What did I say about terrorizing Tia?!" A woman about the age of twenty stood with her hands on her hips.

Sirius Black froze in his tracks trying to tip-toe away from the outburst that he knew was coming. He chuckled nervously as he turned around to face his fiancé. The sight of her really took his breath away as he gazed at the red hair and blue eyes before him. He licked his lips in anticipation. "Yes, love?"

The woman groaned in response. "You can't be terrorizing Tia. You know that she gets overly emotional easily. Why do you even do it?" She put her hands down in a humph.

Sirius walked slowly over to the frustrated witch and put his hands up in defense. "She was mumbling about how Remus wasn't coming home tonight and I merely asked why. She blew up on me, saying that I should know. That he's my best friend. I don't know what happened really." He shrugged his shoulders.

The red head in front of him took a deep breath when he got closer. He always has a way to calm her down by just being. "Ok, but you could always help calm her down. Don't just leave the room. She's freaking out that you don't like her anymore."

The black haired wizard chuckled as he put his arms around the way smaller witch's waist. He was easily a foot taller than her. "Kitten, I will always love your twin. You may not be actual twins, but you're twins nonetheless. I have to accept that you come in a package."

The small witch beamed up at him with love in her eyes. "Thank you, honey. That really means a lot." She lightly swatted his arm. "But I better have most of your love."

Sirius doesn't become serious often but right then he became very much so. "Sarah, you have my heart. You're the first woman to have ahold of it. Why do you think I proposed on our two year anniversary? Speaking of which, we need to start our wedding plans."

The humor in Sarah's eyes shown through ten fold with a wide smile. "Sirius, you only proposed yesterday. I thought you said we weren't marrying until our next anniversary because you wanted to only remember one date?"

"Well, maybe I want to get married sooner. I mean, once we start having children I will have to remember even more dates."

"How many children do you plan on having with me?" Her arms went up to wrap over his neck and she gave him a light kiss on his nose.

The older wizard by two months positively beamed. "Why, five of course."

Sarah visibly gagged playfully and laughed, pushing her fiancé away from her. "I don't know if I could do that mentally, thank you though. But anyway, please go make up with Tia. Do whatever it takes to make her smile for you. Remus is gone on Order duty and she doesn't even know where. I don't know how I would be if that were you." She kissed him sweetly on the lips and walked towards to kitchen to make dinner.

Sirius smiled after her and walked off in the opposite direction to look for Sarah's best friend. As he walked the halls of Grimmauld Place, his mind wandered to the day he literally ran into Sarah and Tia on a Hogsmeade trip just over two years earlier while they attended Hogwarts. Her excitement over the snow was too much for him to wrap his brain around and her best friend, who they call each other twins, was running around with her. Him and Remus had stopped dead in their tracks at that moment and just watched. Sirius remembered James laughing at them saying, "And this is exactly like the moment that I had fallen in love with Lily." Their laughter was so mesmerizing to both him and Remus. They had looked at each other and knew that they had to get and keep the two girls. And that they did. In only three months time they had befriended, dated, and claimed the two girls as their own. It was a tad harder on Sirius' part, as he was known to have every Hogwarts' female woo-ed over him. Sarah didn't trust him as much as Tia trusted Remus. But eventually Sarah gave in and decided to give him a shot. And look at them now, engaged and living with their best friends. James and Lily lived in Godric's Hallow with their new son, and his nephew, Harry. Peter popped in once in awhile, but he seemed busy nowadays.

As he came to, he smiled to himself. Life was really good and he hoped nothing messed it up. He wandered to the library, where he guessed Tia had ended up. Her and Sarah love their books. Low and behold, he walked through the door and there was the brown haired, brown eyed witch curled up in a ball on the chair by the open window to get natural light on her pages. Sirius smirked. He can totally see what Remus sees in her and he was extremely happy for them.

With a quick clear of his throat, Tia looked up in a startled manner. She visibly calmed when she saw that it was Sirius, and then grew nervous. She bit her bottom lip and put her book down, but didn't get up. "Hello, Sirius."

He sighed and walked over to Tia, sitting on the couch across from her chair. "Look, Tia, I didn't mean to make you snap. I know how you get when you're emotional and I should have calmed you down. But then again, I really was only asking where Remus was, but Sarah told me that he wasn't allowed to say anything to anyone. I'm sorry. You know I love you like a sister, right? I love that you and Sarah have a tight bond like us Marauders have and that you're involving Lily in everything. I know James appreciates it a lot." He only stopped when Tia put up a hand.

She smiled as she stopped him before he could start rambling and she stood to sit next to him. "I know, Sirius. I overreacted and I'm sorry as well. I do love you, as much as the others. You're good for my twin."

Sirius let out a huge sigh of relief and hugged her tight with a hand going to her head, ruffling her hair. "You're a great person, T. Please learn to calm down. Remus can only do so much for you."

Both him and Tia laughed at the on-going joke between them as they got up to leave the library. As they were walking out the door to find their way to the kitchen, Tia suddenly stopped in her tracks with a nice "o" to her lips. Sirius looked at her curiously and then had a look of playful horror. "Tag, you're it!" Tia full on punched him in the arm and ran so fast towards her best friend with a squeal.

Sirius barked out a laugh and ran after her. They have been playing tag for a good year and a half now and he knows Sarah loves watching them have a brother-sister bond, as he never grew up with a sister. Just like he loves that his best mates have that same bond with his fiancé. Sirius smiled again. Fiancé. He likes the sound of that. He can't wait to call her his wife.

As he ran into the kitchen, he tripped and caught himself on the kitchen table. He looked over at Sarah in shock and she shrugged her shoulders. "Sorry, honey. My twin always wins."

He growled and shook his head in defeat. There was no going winning with this little witch.

Tia smiled widely and indicated the plates on the counter. "Should we set the table? Sarah made a great meal."

Sirius looked at the many plates on the counter and furrowed his eyebrows. "Are we expecting the Order tonight?"

Sarah looked up at him with worry in her eyes. "I got an owl from Dumbledore saying to expect the Order and a few others. I think he's recruiting more."

Sirius hugged her. "It's ok, love. I think he's just being cautious."

The three of them sighed and got to setting the table.

A/N: PLEASE leave a review! It would be much appreciated! I want to know what everyone thinks :)