Jealousy strikes in almost all of relationships, just like in MarkSon.

"A kiss of forgiveness is like the start of your favourite song." - My 1am brain  

Mark loves Jackson's hands

“Once upon a time...”   Jinyoung pulls back a little and smacks Jaebum across the back of the head. “Yah, hyung. That's not what you're supposed to say. You're going to make people think this is some sappy fairy-tale, instead of the reality we've all had to live through.”