Breaking the Halo

Breaking The Halo, or Breaking A Halo is a term describing basically disrupting the peace in a conversation or action.
It's a simple reminder that what you're about to say is probably going to hurt the peace.

How the term "Breaking the Halo" could be used in a sentence, is let's say for example, your dog had sadly passed away a day ago. A conversation may go like this:

You: "hey... I don't wanna Break the Halo, but, my dog died a day ago."
Friend: "Dude, what..?"
Friend 2: "we were enjoying our peace, but got struck with this..? What the hell even happened?"