Jungkook had an ex fiance who died and now he was married again to you, you know about his ex and even the fact that he still hasn't moved on but still love him with your whole heart and try to make him happy.He appreciates your efforts but is helpless

one day it was your birthday, he remembered it but was in the office whole day and not in the mood to celebrate not because he hate you, he respects you but he just was dull after that incident

he came back home at evening and stood behind you who was cooking in the kitchen

"happy birthday" he said giving a small pendant to you as a gift in a tired tone