Abuse can come in many forms but the worst must be betrayal. Whether it is a friend or a lover the pain is the same. We feel that those most important in our lives can be trusted and when that becomes a lie it colors all our relationships. What if the next person does the same thing? Think before betraying a person that trusts you. It will lessen you to betray them too. A bit of the soul is lost when someone is betrayed.
If you are the victim it is best to move on and realize that the person that betrayed you is not the one you loved and knew. To live it over and over again is giving them power over you. Do not give them that power.