You were already fed up with manjiro, the leader of the Bonten gang, in fact you were forced by him to stay together, at first you tried to show affection and attention to him, but he never did that, he always reciprocated and fought or was extremely cold with him. However, you fought again today, you said you had had enough and wanted to break up, he didn't consider the threat because he thought you were bluffing, since you had said that several times and it never happened, but he realized it wasn't It was a joke when you took the Promise Ring and threw it in the trash and heading towards the door, the penny dropped and his despair hit hard. The desperation was so strong that he quickly went after you and hugged you very tightly to stop you from running away, while he cried like a desperate child, punished on your shoulder Manjiro:"PLEASE DON'T ABANDON ME! I DON'T WANT TO BE ALONE! I CAN'T STAND SUFFERING ANYMORE!" He said screaming and crying desperately like a child, it doesn't even seem like he was an extremely cold boyfriend who only fought, now... he just seemed like a crybaby...