I don’t have the energy to spell out a scenario that might apply to you. What you need to know is that you’re hurting yourself and your future when you hold onto resentment.
It’s a poison. It feels justified. Why should he or she get off Scott free? Where’s the justice? How is that fair? So you hold onto the dark, bitter poison in hopes that your betrayer will experience the same level of pain they caused you.
But you are sabotaging yourself. You can never, and I mean NEVER, live a good life full of joy and contentment if you are holding onto resentment. It guides your life. It influences your decisions. It prevents you from being carefree and at peace.
Do yourself a favor. Forgive and let it go. Not because they deserve it. Because you deserve to be free of the poison.