Song: The promise by Jay Park 
Pairing: Mark x Jinyoung
Mark was going through old boxes of things down in his basement. His boyfriend Jinyoung was upstairs unpacking the care packing their friends Yugyeom and Jaebum sent them. Mark found a old box filled with pictures and letters. He looked into the box and saw a picture of him and Jinyoung when they first met. He smiles remembering every picture. He was the letter addressed to him from Jinyoung. It said: 
Dear Mark, 
I love you a lot. When we first met you seemed quiet and shy but as I got to know you it was evident that you could be crazy and loud. Your smile lit up my world. Your laugh was clear and sweet as music. Your eyes sparkled like diamonds when you talked about something you loved. The way you stay focused on the person speaking to you is what made me fall for you. I love you Mark Yien Tuan. I promise you that once we're older we'll be married with kids and a dog. I promise you Mark. 
Love,Jinyoung
Mark smiled and felt arms wrap around his waist. "What are you doing?" Be felt Jinyoung nuzzle his neck. Mark laughed and stood up then showed him the box. "I'm looking through our box." Jinyoung hummed and nodded "We have to feed Seokjin and Yoongi." Mark nodded and followed him up stairs picking up Yoongi who was sitting down pouting. Mark thought as he put food down on the table and started feeding his son 'I'm glad Jinyoung kept his promise.'