Going away implies bidding someone farewell or exiting from someone's life, once and for all. It is quite disheartening to see someone going away from your life voluntarily and self-willingly. You cannot question the person's decision and you can't even impose yourself on someone. When someone is willing to walk away from your life, you should let them do the same at their own will. Accept the will of God who does not want the other person to be in your life anymore.
Breakups are hard and sometimes situations get out of hand. People walk in and out of your life, all the time. Let those people go away who don't want to be a part of your life. Relationships involve give and take and they are a two-way affair. It requires two people to start relationships and one discordant or self-centered person is enough to put an end to the relationship. Whatever happens, try to accept what fate brings you and move on is someone goes away willingly from your life.