Do what you need to do as long as it isn’t harmful to you or others
Breaking up with someone is a loss—a death. The death of a relationship. The loss of a part of your life. No matter how it stops, it does. There may be lingering at the door, but at some point, the door shuts, and it hurts.
There will be triggers—restaurants, music, activities, and maybe even mutual friends that will put you back to that moment that the door slammed shut.
So you will miss your ex. It’s expected; this isn’t a surprise. After you have surgery, the recovery will be almost as bad or worse until everything heals. That’s expected. Know this.