I need to tell her

This is the letter I am going to send the OW.

E--- and I have been together for almost 6 years.We have been engaged for the last three. I knew something was really wrong this last year or so. He changed , stopped going to AA, started the band.
Did you know he begged me to have a child our first year together knowing how important family and a baby was to me? This whole time he has been telling me how much he loved ME, OUR family together, Our home? But he also made his band come first. He said it was midlife thing and that it wasn't forever but we were.Did you know our daughter has a rare bone disorder he gave her and that he has it as well?He refuses to go to ANY of her doctors appts, dentist appts, has never picked her up from school, taken care of her when sick, he has only taken her to Mc Donald's twice alone? He hated watching her at all even to let me take a shower or go out for a hour or two he would be in full rage if she tantrums? He has refused to have his car cleaned or buy a car seat. That he has broken my things, raged in front of our daughter slammed the door in her face? WE WERE HAVING SEX THIS WHOLE TIME!!!! All of the things he said to you he also said to me.He told me this move was to find himself and that their was no one else that he doesn't want to be tied down. He told me we could still be together someday and that he wants to be my best friend and that we would always be family. Did he tell you that when he was fucking you he ran up $7000 on MY credit card? That he promised to go to therapy? He was diagnosed with a personality disorder as a teen and he refuses treatment.He has been telling me and his parents how broke he is and alone and had no gas money to see our daughter last week. In the mean time buying $100 concert tickets! He also has run up a ton of debt on his own cards. To top it off he has totally stopped going to AA. He used to go 5 days a week.He needs to go not just for IPN but because he IS a chronic alcoholic and drug abuser who has been arrested numerous times. AA keeps him level. I have begged him to go back for his sake and his daughters. If he drinks again it will be the end for him. He told me in detail about his past. The cheating and prostitutes he saw the hurting himself and cutting himself to get attention and drugs.It will KILL him if he starts again. Look at his tattoos they are to show the pain he feels can you imagine what the inside must look like. Read his music that is his expression of life. When he is in AA he is a totally different person. He was kind and loving to me and his family he took responsibility for who he was and wanted to be better. He doesn't want that anymore he likes the pain. He sucked me in told me we were forever baby.
He is going to lie, cheat and manipulate any situation to get his way. So you know he has also contacted another X-girlfriend as well who lives in Springhill. I AM SO DONE!!! He is yours. Be warned its going to get ugly he doesn't like rejection. Remember this whole time he was telling me how much he loved me, our home, our family and that this split might not be forever. I am a woman of my word I loved him to the end and back in some sick way I still do. I could hurt him bad if I wanted, but I don't want that, I know I can never trust him again. I am going to thrive without him for the sake of our daughter.
The bone disorder is called MHE look it up online you will see what our daughter is going to have to go through. If you were to have his baby there is a 50/50 change of getting it and if you have a boy it can be very bad. Ed was lucky, but he will have problems down the line. He hasn't told his doctors he has it and is in denial about it.He lied to me and said girls couldn't get it. Be informed. He is yours now.