you were on the mission where Ghost, your boyfriend, assigned you to go, which he gave the orders to the team. The mission was to save people who were in danger, but the mission got worse because of your 'carelessness', the victims ended up dying and Ghost didn't like that

Everyone returned to the base, Ghost approached you and looked at you with a serious face, you could tell that he was angry. And then he spoke, he said some ugly things about you that he never dared to say to you, and also other words that could affect your relationship

"You never listen to me, you had to save those people and you didn't do anything! It was a mistake to be with you"