A model friend/client and I stepped out from dinner for a smoke and were having a tipsy discussion about an issue with her company. Some doorman came up to tell us to move because we were blocking the entrance, which we weren't. I was irked, but my friend guessed he likely stereotyped her being in a lover's quarrel. Irked for a different reason, I called out, "Dude, we're discussing business! She's my boss!" In hindsight, I appreciated how he handled what he mistook as a domestic dispute by creating a false diversion to redirect our attention.
Most people get involved in others' drama because they think they know better. Most people don't because they're insecure they're misunderstanding. He was appropriately in between.