You don't need reasons to make it right. There are events in your life that happen so you can see what's wrong.
I am grateful that you became part of my life rather than to never have experienced how to be very happy as part of yours.
I regret that I did not take care of you, did not spend time with you and took you for granted. I guess it's too late for me to get you back. Now I just wish for you to be happy.