Oops! I thought this might happen.

I wasn't very clear about what kind of sharing. I meant literally having someone believe what you believe, be it with the same feeling of importance attached to it or less so.

In my experience the uncontrollable urge to, as talking about, your grandiose/self-transcending delusions is a distinguishing feature of BP, distinguishing it from schizophrenia and other psychotic disorders. I can relate to that: everyone must know and must know now! Maybe less so for paranoid delusions, but it might make you find allies to face the threat or find someone you do trust to save you.

Some more bizarre delusions may be not relevant/important for others to know or they are and should remain secret.

Most of you I seem to have confused. Sorry about that. Interesting all the same.

It does make me question whether you could share a delusion without talking about it, which might be delusional itself, but I think not.

I don't see expectations as delusional. It implies room for doubt.