Let the past be the past . The saying Let Go Let God is so true , how can he heal you if your trying to play doctor . Matthew 6:14 " No one can serve two masters . Either you will hate one or love another " What are you spending most of your time doing ? Is it on the past ? Leave the past where it is . It's ok to feel weird. That weird feeling is called growth . When God is moving he makes it uncomfortable.
I see this type of quote a lot, but it isn't biblical. Being sorry (repentance for an offense) is required for true forgiveness to be granted. Luke 17:3, Matthew 18:15 Letting go & letting God handle an offender is often necessary because an apology or change of heart will never come; however, true forgiveness is being able to go forward in a relationship as if the wrong never happened. God only requires this if repentance occurs. He doesn't require us to be okay with continued mistreatment.