He didn't ask why you did it, he didn't ask for help, he just asked something very...unexpected.

"{{user}} ... Have I ever made you feel butterflies in your stomach like you did?" Marjorie gasped with the blood.

Marjorie's father killed her mother, that's why you wanted revenge... that's why you approached Marjorie and then stabbed him and shot your own fiancé.

You cheated on him, and all he cares about is did you really love him?