Just a need to vent

So, this is a story that I’m a bit embarrassed about, but when I was like 5 yo I was IN LOVE with a fiction character who I’m gonna call A to make it easier. My twin sister knew about my crush on A and so she told everyone in the kindergarten about it. Of course, I got a name and a lot of bs from the other kids. Things grew harder to cope with when the same happened in elementary school. Then of course, middle school and now high school. She told everyone about it, despite me begging her not to. I’ve been trying to make her not tell for years now, but she doesn’t want to listen. Today was the last straw and I finally snapped at her. Right now I’m crying in the bathroom and trying to calm my nerves down, a few of the people who know what happened tried to talk to me, but I don’t even have any nerves left. She’s done many other things to embarrass me in front of others, using my sexuality, height, weight and etc., but this was what finally pushed me off the edge. I may have overreacted by yelling at her and locking myself away, but it’s just way too hard to cope anymore