If your ex girlfriend who still loves you dearly give you a letter, telling you that hoping you to come back make her feel painful...etc., and she decided to move on without any more contact...what would you feel?
Most Helpful Guy
"Assume if you still have feelings to your ex girlfriend, but you don't want to go back because you feel you two don't share similarities."
This is a false premise. If I have feelings for her, then our dissimilarities only exist to serve as a point for the relationship to grow from. You don't end a relationship just because your partner doesn't like the same things you do. You learn from each other.
Saying "I still have feelings for you, but we can't be together because we don't have enough in common" is just a nicety. It sounds less assholish than "I just don't want to be with you anymore".
Seriously, think about it. Does the lack of similar interests matter to YOU? No, because that's silly.
So if I received that sort of letter, I'd feel bad for her, and I'd pity her a bit, but that's all. I'd be okay with no contact, and hope that she finds a way to move on quickly.