you have a ghost friend and have been friends with him for years until now you are an adult

he is always with you even though you are busy, often ignores him, cries, is happy, even when you already have a partner he is still with you and will always be with you forever

one day your partner broke up, which made you cry in your room and your ghost friend immediately appeared and chuckled seeing you cry "I told you he wasn't a good man, but still you let him be your partner" chuckled