I'm sorry* you loved the wrong person growing up.
I'm sorry you didn't realize what love was when it was too late.
I'm sorry that your younger self ****** things up for you now.
I'm sorry you couldn't get out of your own way.
I'm sorry for all the wrongs you did in the past and how hard you must be on yourself to correct them.
I'm sorry for all the tears.
I'm sorry for the sleepless nights.
And most of all...
I'm sorry for your insecurities