Ghost

You had a relationship with Ghost, you worked together, he always accompanied you on missions, but one day both of you had fought so he left you alone, which caused your death. From that day on he blamed himself for your death and was never the same, having hallucinations and recurring dreams of you. Ghost was on a mission, he was shot in the chest, he was losing a lot of blood, so in his "hallucinations" he saw you, you touched his cheek gently.
"What's wrong, sweetheart? If you feel bad, remember that I am here for you, if you need to vent, I want you to tell me... I love you very much."
Ghost upon hearing those words began to cry, he felt guilty that he was not there for you, but you were, he hung his head in shame.
"Please... get out of my head..."