I think you lost something (soulmate au)
When everyone turns 10 years old they find a box next to them when they wake up. Everyone’s box is different, some are sleek and modern in design some are incredibly ornate. Each box is unique not because it relates to you, but because it relates to the soul that you are destined to love. Whenever your soul mate loses something it finds its way to the box so that it can one day be united with its owner. When you woke up on the morning of your tenth birthday you felt it under your hand. Slowly you opened your eyes and saw it. It was a beautiful shade of a deep emerald green it felt smooth under your touch, it was a simple design on the outside, just a plain box and a lid. You opened it up to find that it was empty, put it was lined with beautiful soft red fabric.
The box stayed in your bedroom, under your bed and you checked it every morning, even when you moved from your parent’s house to Xavier’s school for gifted children. Your soul mate was a careful person, she must have kept her things in order. It was months before you found anything in the box. When you did you saw that they were a worn pair of gloves, you looked outside you window and saw snow. Thinking about how cold she must be you did everything you could to try and loose a pair of your own thick gloves a tiny note stuck inside them, trying to in your own small way to keep your soulmate warm.
Natasha had her box ripped from her grasp when she turned 10. She knew they couldn’t destroy it, but she knew she had to find it again. She kept the picture of the box in her mind, that box was her proof of you. Her proof of love, her proof of hope.
You periodically kept fining things on your box; a pair of socks, a scarf, worn out ballet shoes. As you got older the items in the box started to change, when you were 15 you found bullet casings, when you were 16 you found a knife with dried blood at the base, when you were 18 you found a jewellery box in it was a necklace and a note.
“Whether I lose it now or give it to you later doesn’t matter. You are to me today what you have been since I was 10. You are my hope, see you soon soul mate”
Natasha had put the necklace in her go bag with her box. It was time and she knew it. She had to leave now if she was ever to find you. That night was the hardest night of her life and it didn’t end with day break. Two days later she found herself in the back of a SHEILD aircraft with a blanket draped over her, holding a heavy box as if her life depended on it.
When Natasha was left in her own quarters she was scared. She had wanted nothing more than to open this box since the day she turned 10 and now it was sitting on her crossed legs. She slowly and gently opened the box and saw that it was full of neatly packed trinkets. On top was a flannel shirt, she picked it up gently rubbing the soft fabric between her fingers. She could see a stray strand of (y/h/c) hair stuck to the collar. She felt enveloped in you as she pulled the flannel over her shoulders, inhaling the scent that you left behind. She lifted each item out of the box and inspected it carefully. Slowly her bare quarters started filling up with items you had lost over the years. She made sure each item had a home, the childhood bear you lost has sitting on her pillow, the art homework you misplaced was stuck to her wall. The last item she found were a child’s pair of gloves. Inside one of then was a scrappy piece of paper with what could only be a child’s hand writing across it.
“I know you lost yours and its cold out. I hope mine find their way to you. Love you soul mate”
Those were the first tears Natasha let herself cry in years, and for the first time they were happy tears.
Working for SHEILD Natasha learnt who the X-men were, she knew what Xaviers school was. She just wasn’t expecting an X men belt to show up in her box along with a bag full of classroom resources four years after she joined SHEILD. She held the belt in front of her and recognised it instantly. It was you the X-men’s hard hitting water girl. Natasha immediately set off for Xaviers school, not bothering with the SHEILD jests knowing the commotion that would occur. She packed a bag bringing all your things, packing them in her box and jumped in her car, speeding down the road.
She was near Xaviers mansion when a little cottage at the side of the road caught her eye. She felt drawn to it, like there was something inn her telling her that she needed to go to that cottage. She pulled up in front of it and picked up her box and walked to the door. It swung open before Natasha had the chance to knock. She was taken back by the sight of you, everything about you felt right in a way that she had never experienced before. She felt tears come to her eyes as she spotted a necklace around your neck, a necklace she hadn’t seen since most of her belongings fell in the Danube all those years ago. She eventually found her words, her voice cracking as she said, “I think you lost a few things (y/n)”.