Had an interesting conversation with a friend tonight about this.
She said things like 'If your MH is bad, It's okay to pretend you can't attend something because you're busy/physically ill/similar, because it isn't their business'.
I think It's okay to lie sometimes. For example I've lied to a child about how a pet died-telling the truth would do no good aside from upset them.
What's your opinion on the subject?