You loved Jungkook a lot and he did you too

But one day he got into an accident and lost part of his memory (he won't remember anything since you came in his life)

His mum made him believe someone else was his girlfriend and warned you to stay away from him, without mentioning a word about his relationship with you as it could deteriorate his health, putting him in danger. 

You didn't want to lose him but you couldn't leave him either. Taehyung and Hoseok were mad at his mum for being so cruel and wanted to tell Jungkook everything but you stopped them. I can't risk his life like that even if it means he'll be looking at me like a stranger again.. I'll be okay as long as he's fine.. /tears escaped your eyes/ 

"That is not okay!" Hoseok yelled, "Kookie really loved you and he has every right to know that the girl he's with right now isn't the one he's meant to be with!" After thinking for a while the guys came up with a plan. "Move in with us at the dorm?!" "What no? Are you guys out of your mind?!" "Y/N you have to it's the best way for you to see Jungkook, seeing you everyday he might even remember everything~!"