It is not necessary that you tell them. Is there a chance you'll be invalidated by them if you do? I know the feeling of wanting to let people know, but think about it before you do...seriously. Do you think I'd get it and try to understand or think you're using it as an excuse for bad behavior. There's nothing worse than literally beating yourself up about not telling them, angonizing about it, and finally doing it and them discounting it or telling you it doesn't matter, or worse, shunning you because of it.

I understand the need/want to SI after not being able to do something you feel the need to...and I very sorry you feel this way. I'd recommend meditation prior to making any decisions. I have a lot of resources if you're interested.