I want to start by saying how sorry I am for the emotional trauma I have caused you. I never intended to hurt you in any way and I deeply regret the pain that I have inflicted.
I understand that my actions have caused you immense suffering and I take full responsibility for that. I know that this apology may not be enough to make up for the pain I have caused, but I want you to know that I am truly sorry.
I realize that I have caused you a great deal of emotional distress, and I am sorry for the way I have treated you. I should have been more understanding and compassionate, and I should have taken the time to listen to your feelings. I should have taken your feelings into account before I acted, instead of disregarding them.
I want to make it clear that I will never again treat you with such disregard and disrespect. I will do my best to be more mindful of your feelings and to treat you with the respect and kindness you deserve.
I am aware that words alone cannot undo the emotional trauma I have caused you, and I understand if you don't want to forgive me. I just want you to know that I am truly sorry and that I will do whatever it takes to make things right.