I told my parents years ago when I was still trying to figure it out, so they don’t know the full extent of it, but neither did I at the time, and there’s no way I’m gonna go back and explain further at this point. It’s not worth it.
I have told my brother, and although he may not fully approve, he doesn’t judge me harshly for it.
I’ve only told him and my best friend (who’s basically a brother to me), both of whom are gay. I think that makes it a bit easier to understand, since we’re all sexual/romantic minorities or whatever the proper politically correct term is. It’s definitely a different struggle, but it has some parallels.