I have more that I need to get out off my chest

As I mentioned earlier that I randomly came across him, and I was kinda shocked. Especially to see how happy he was. And I m angry at him bc I know that he have had some kind of effect on me and my gender identity as a trans woman.

For some reason, I felt an urge to reach out to him—to tell him how everything has affected me and share all the things I’ve been wanting to say. I added him on Facebook, and he accepted my friend request. But now, I have no idea how to start the conversation. I can’t seem to write anything that makes sense, and I don’t know how to express myself.

Someone help me with how I should start a conversation with him