Example from life, do you say?

I have a friend who is also a fun musician. He told me that his wife had left him. And she left because his mistress (wife's best friend) stuck him for sex with his aunt while his wife was on a business trip and told her everything. And it would be nothing, but how the mistress struck him, you ask? And he gave her the keys from their apartment with his wife, so as not to walk and not to open her entrance door (the home phone broke). And no, she didn’t decide to make him a surprise, he just forgot that he invited her to a guest for fun))