When you’re trying to get over someone you were deeply involved with and the relationship abruptly ended…..

What things do YOU do in order to move on?
Knowing and realizing you’ll never hear from them again (at least not in that context or realm); do you pretend they never existed? That it all was a farce? Do you find ways to hate them in order to move on easier?
Just curious what mind set methods, compartmentalizing you have done that helped you move on…
And the gut and heart wrenching fade?