I don't generally tell people, unless they go there themselves, because people overreact. Living in the dark is a pretty normal thing for me. It's something I've done for a very, very long time. I spent 5 years trying my damnedest to die. Still here. I'm fleetingly suicidal, when I'm not doing well, several times a day. Not ideation, but actually suicidal. Ideation is far more frequent. Even when I'm doing well, I can have whole days where for no reason whatsoever I despise myself and want to die. More than 15 years later? I'm still here. Death & I are old friends. Old enemies. It's part of why, when I don't want to die I revel on life so hard.
The people who I do tell? Are comfortable with it. They'd kick my ass if I needed it, laugh at me, enjoy life with me. They know the dark. They know it's not their fault, and that I know that, too. Not saying they wouldn't be affected if I did die, and I would be towering rage if they did, but we're used to this place. It's not something to get all excited about. It just is what it is. And everything is temporary.