I've decided to post the unsent letter here. I think it might help all the more to have it out there. Maybe it can inspire others to do similar too.

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Hey. You're probably quite surprised to be hearing from me after so long. Well, I've got some things I wanted to say. Whether you care or not doesn't matter. I'm going to say them anyways.

I've decided to forgive you. Yup, you read that right. It doesn't excuse what you did, but I shouldn't have to suffer anymore caught up in being unable to trust other people who do care just because of you, a selfish prick who was heartless enough to use someone who cared deeply for him. I've been robbing myself of better experiences with better people and I'm not going to do that anymore. You don't get that power over me. I'm taking it back.

I do have one thing to thank you for. I learned an important lesson from you. I learned I need to trust my gut more and not ignore red flags out of desperation. I will never settle for someone like you again. When you said you were ashamed of me and didn't want anyone to know about us, that should have sent me running for sure, and that wasn't the only red flag either. It seems so obvious in hindsight, how could I think it was a good friendship? Friendship... That's not what it was. Friends don't use each other in the way you used me. Friends don't treat each other as disposable or "when I have nothing better to do". Friends sure as hell don't prioritize sex over anything else in their relationship... We weren't friends, just two people desperate for comfort and finding it in the wrong place.

I genuinely hope things are going well for you, though. I hope you wised up and moved on from that horrible woman and found yourself someone decent, but that you treat that person with the respect and kindness she deserves. I hope you learned from myself and your other past relationships. I hope you managed to escape working under your brother and left Florida like you wanted. Most importantly, I hope you've grown up.