A time will come in your life when some people will regret why they treated you wrong. Trust me, it will definitely come.
In different relationships, each person has different ways to treat you.
Someone always be kind to you. Someone behaves in a neutral way. Someone treated you very badly. These people, sooner or later, will feel sorry for the way they were bad to you.
It is when you don’t care how bad they are to you, and you’re still kind and friendly with them. They will feel guilty because you don’t blame them.
It is when they are treated the same way they treated you. They understand the feelings they have caused to you. And they will feel regretful.
It is when they have difficulties, but you still generously help them. “A friend in need is a friend in deed”. That’s when they regret because you are still with them despite the difficulties.
It is unable to avoid difficult times in each one’s life. There will be times when they are in the same situation as you were, or they will realize their faults via some impacts. They will realize it for sure.