I cannot speak for anyone other than myself. I have never had a boyfriend of any length of time, not reach out to me, after our break up, even years later. I have no idea how “normal” this is, or not.
I still hear from my first ex-boyfriend and my first ex-husband, how “normal” is it? I think most people hold onto anger and hatred towards the other person after a break up. I feel, that if I ever loved you, I will always care about your well being, maybe they can feel that?! I know I am a loving person, who accepts others faults, and am forgiving of mistreatment. I try to look for the good in others, even if they have never shown me that face. Remembering how I behave and react is a reflection of myself, not them.
It makes life easier when you can run into an ex and not have an ill feeling, instead wish them well, perhaps very far from me, but well nonetheless.
Thankful, Grateful and Blessed!