Write me a last letter to my Ex? For closure’s sake? Ammend my text?

I’m married to a guy now. I was in a relationship with my ex who’s a girl, and we broke up 3 years ago. Here’s my story, 6 years ago. When I was 21, I got with her. She was my only friend. I was bullied a lot in school. And when I got out of school, I worked a lot on my looks. Then made some friends for socialising at events. Who were not really close friends. So she was my only friend when I met her. I was really lonely and quiet. Growing up.. She was the smile to my days when I met her. I became more thin, got more stressed. Joined school, had her to keep up with the years that was passing. She always said I wasn’t doing enough so I even quit school. Worked from home so I could be near her all the time. I came out with her because she made me happy. And got even more stressed with society, and family stress. Friends were not even accepting me. And my family was saying their friends tell them “at least their daughters won’t bring home another girl” .. Because everyone was judging me with Erica. I had come out on Facebook. So 1000 over people knew about me and Erica I was just young and stupid. I wanted to scream it out from the rooftops. Facebook was my rooftop. And when I went to any event or functions, my own friends would move away from me when they were with their parents. Or anything. I felt embarassed. Erica had come to see me in my country. Because we were having the long distance relationship and we only met two instances. When I went to her country, and when she came down to mine. So on her last day she was here, my parents went to her hotel. And told her to stay away from me because they wanted to get me married.  That day ” she told me we couldn’t be together” and she told me that my parents had come to see her. So I got pissed. I couldn’t believe my parents had gone to see her and I hadn’t even told them about her hotel. We made up. But after she left, my parents started sending me out with tons of guys. And I had to tell her this. That was our breaking point. But what caused our breakup was when she was speaking of this dating app called “tinder” . She wanted all my passwords and I had nothing to hide so I gave her all my Facebook passwords, instagram password. Every password she wanted. And she found out my tinder account. I didn’t just have tinder but many other dating apps. Because I build apps and websites. It was normal to me. So I asked her to go look and see if she finds me flirting with anyone on it. She asks me  Why was I speaking to another girl, and telling her that I didn’t have a girlfriend.