Just to say, having been through something similar myself, that one way to think about it is that on some level your heart was always broken by your dad’s disappearance from your life.
But you always had to hide it for your own safety/security. And now you’re in a place in life where you are safe enough to bring those feelings out in the open, heal them and move forwards, in whatever direction this takes, having had the chance to properly deal with your emotions.
Ina lot of ways it doesn’t really matter what he does. You were brave enough and healthy enough to attempt to change or close a situation that arose at a time when you had no real influence over it (when you were a child).
So this is important for you and your development as a person, whatever your dad does.
You might get a relationship with him out of this, you might get closure, you have already had a chance to express justified anger in a healthy way.
You should be so proud of yourself. Whatever happens, your life will be better for doing this.