I'm sorry for not being more considerate
I want to take a moment to sincerely apologize for not being more considerate in my actions. I deeply regret any hurt or inconvenience I may have caused you, and I want you to know that I genuinely feel sorry for my behavior.
I understand that my lack of consideration may have made you feel unimportant or disregarded, and for that, I am truly sorry. It was never my intention to make you feel this way, and I want to assure you that I value our relationship and your feelings.