The guy I call dad

I will be the first to admit that growing up I was a daddy's girl. I used to look forwards to the time with you. Yes I was scared of you most of the time because of your temper and the drinking. But I still loved you like any little girl should.
I don't know when our relationship really changed. I can pull out memories of watching tv together during summer holidays when I was in high school but they are always followed by not knowing where you were or when you were coming home for days.
I keep it all a secret from mom though. Because to be honest at this point in time I thought it was my fault. I had gotten my first girlfriend and I didn't care for your girlfriend.
I don't know if our problems started with you and mom divorcing, your new wife already having a daughter, or me telling you I was a lesbian. I don't think I'll ever know where it went wrong.
This letter isn't to blame you for anything. It is actually to thank you. Because now I know even people who swear they will never leave you can always just walk out of your life without a second thought. I know I can survive people leaving me. I know I can survive my mental health without having the strong person I used to lean on to help me. I can do this on my own and you taught me that.
If you are curious in the slightest. I'm doing great. I have a roof over my head and two cats. I have a full time job I've had for over two years and a girlfriend I intend to marry. But you won't be attending that. When we have your first grandchild you won't hear about it from me.
I know it sounds bad but after nearly 10 years I learned that it's not my fault you walked out. I have accepted the fact that you won't be there. Now all's I ask is please accept the fact when you learn about everything I'm doing.