you need to talk to this person or pray for some realization to befall you. if you have gone over this thoroughly and know there are no other steps to take in the matter just pray for resolution. it’s the things left unresolved that hurt us, even more so than if this person hurt you purposefully directly in your face, it’s the not knowing and unresolved that hurts. if nothing can be done, go about your life as best you can. when the time is right, you will be sent your resolution.
