I mean, she is. She doesn't say she loves him or she feels bad about leaving him.
She just said she didn't want to hurt him anymore. Her plan is it literally get pregnant, give birth, and then meet some other guy and live a normal life.
So for 5years she hasn’t thought about him until her revenge plan?
-/-/-/
Going backwards reading I see he really hasn’t called her name (only in his head and to his friend)