This is a letter to my ex-boyfriends, ex-crushes, ex-flings, etc:
As much as you may have hurt me, I will forever be grateful to you. During our relationship, I learned more about myself and how to be a good girlfriend/future wife than I ever could have without you. I have made mistakes, and am very sorry if I hurt you in any way. Thank you for putting up with me; I'm sure I wasn't the easiest to deal with at times.