AITA for sending a 5 page letter to my dad's ex-wife and her new husband

My dad is remarried. His first wife cheated, then she divorced him. She’s married to the guy she cheated with. My dad is happily married to the love of his life. But his ex-wife (Callie) is a lot like me. I get my persistence from her honestly, and I do feel bad for her. I just can’t help what I am. <br><br>Callie is obsessed with my dad and has been since the divorce. She can’t move on. She is still in love with him. Her husband knows and it’s really hard on him. I feel terrible for him but he refuses to leave Callie. <br><br>She leads this group of women who have been divorced and she tells them it’s ok if it takes years, or decades, their ex-husband will come back to them one day. She tries to give them advice. But honestly, it’s all terrible advice. She’s obsessed with my dad. <br><br>I hate the influence this is having on my father. I don’t want him to feel uncomfortable in his own home. He’s had enough. But the advice I got was the best path forward was to write her a letter, rather than confront her. So I did. I printed it out. In cursive. On paper and sent it to her at work with the words “my gift to you” on the envelope. <br><br>The letter went like this. <br><br>Dear Callie and Jim, <br><br>I see my dad regularly. I see how happy he is. It must really sulk to know you couldn’t make him happy. You tried your hardest but he’s so much happier without you. You could never make him happy. I don’t know what it is. Maybe it’s because you’re so ugly. Maybe it’s because you’re so controlling. Maybe he just isn’t that into you. But he loves my step-mom. He’s the happiest he’s ever been. He talks about how much prettier and sexier my step mom is compared to you. He’s grateful he’s free from you and can finally be himself. He’s so much happier without you. And the best part is, he will never give you a 3rd chance.<br><br>How does it feel Callie, to know you couldn’t make my dad happy? That he was never happy with you? How does it feel to know that my step-mom is everything you couldn’t be? How does it feel to know you failed as a wife? You couldn’t even keep your husband faithful. And now you’re a joke. You pretend you’re happy. You pretend you’re a good wife. You tell all your friends you’re happy. And deep down you know it’s all a lie. But the sad part is, you’re not fooling anyone. Everyone knows how pathetic you are. Everyone knows how desperately you want my dad back. How sad it must be to know you can never have him again. How sad it must be to know that my step-mom is so much prettier than you. <br><br>I know you can never move on. I know you will always be in love with him. He was the best thing that ever happened to you. He was good to you, even though you deserved nothing but contempt. He was your only chance at true happiness. And you blew it. You can never go back. No matter how hard you try. You will never have my dad again. And you will never be able to move on. You will always cry over what could have been. <br><br>You are pathetic. And it’s sad. It’s so sad how ugly you are. No one will ever love you like my dad loved you. No one loves you. Everyone knows how pathetic you are. Everyone knows how sad you are. And everyone knows how ugly you are. You had your chance. And you blew it. You will never have another chance. And you will always be miserable. <br><br>How does that feel Callie? It must be so painful. You will never be loved. My dad loves my step-mom. She’s younger and prettier than you. She’s everything you could never be. And she’s amazing. My dad is so happy. But that doesn’t change the fact that you’ll never be loved. And my step-mom is so much prettier than you. Your best years are behind you. My step-mom is coming into her own. She is the most beautiful woman you have ever seen. How does it feel to know that you can never compete with her? How does it feel to know that my dad will always love her and never love you again? <br><br>You are pathetic. You are ugly. And it’s sad. It must be so hard to be you. It must be so hard to know that you’re a joke. Not even your husband loves you. My dad will always love my step-mom. And you will always be alone. My step-mom is so much prettier than you. You might be able to fool everyone but yourself. But the truth is, you’re pathetic. You’re so pathetic. My step-mom is so much prettier than you. She’s younger, she’s sexier, she’s so much more intelligent. My dad might have settled for you. But he’s never going to leave my step-mom. <br><br>You might be able to fool yourself. You might be able to fool your husband. But it’s obvious the rest of us see how pathetic you are. How sad it must be to be in love with a man who has moved on. How sad it must be to know you’ll never be wanted again. It’s hard when you know you’ll always be alone. It’s hard when you know you’ll never be loved. How sad it must be to know you’re pathetic. How sad it must be to know you’re a joke. But that’s just it. My step-mom is so much prettier than you. Everyone knows how pathetic you are. Everyone knows you’re a joke. You will always be alone. And you will always be pathetic. <br><br>You will always be alone. You will always be sad. And you will always be pathetic. It’s so sad. How sad it must be for you. But deep down, I’m just glad you can never have my dad again. I’m so happy he’s free from you and he’s with someone who really loves him. But it must be so hard for you. It must be so sad. And it must be so pathetic. <br><br>I’m so sad for you Callie. You have no idea how sad I am for you. You just can’t help yourself. You will always be pathetic. My dad is so much better off without you. No one will ever love you like my dad loved you. My step-mom is so much prettier than you. Everyone knows how pathetic you are. And deep down, you know how pathetic you are. But hey, at least my dad is happy. At least my step-mom is happy. And at least you know exactly where you stand. You will always be pathetic. And you will always be a joke. <br><br>I’m so sad for you. No one will ever love you again. And you will never be able to move on. Everyone knows how pathetic you are. And everyone knows you’re a joke. But the good news is, my dad is happy. No matter what. <br><br>I hope you have a nice day Callie. <br><br>Sincerely, <br>[Me]<br><br>AITA for this?