I'm reminded a couple of incidents from back in the day...
A married couple was holding a housewarming party and the married woman was flirting with me outrageously. Making a big deal out of it, constantly complimenting me or making sexual innuendo. It was making everyone around us uncomfortable. She finally did this while her husband was present. His eyes flashed in anger immediately and he glared at her. From behind her, so she didn't know how upset he was. Maybe 40 years ago he waits until the party's over and "disciplines" her. Not in this day and age.
Anyway, about a month later she was divorced. They had no children so he walked away scot free. She had nothing so she had to sell all of her possessions asap in order to buy a ticket back to her home country.
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One of my married coworkers (not hot, and older, but she acted like a teenager) pulled an outrageous stunt in retrospect. It was valentine's and she wanted to hang out after work. I didn't think anything of it. We met up with her husband lol. At first he was glum but became increasingly agitated. We walked to their car, and he had flowers waiting for her.
He handed her the flowers then ran off with tears in his eyes. He had wanted to surprise her with flowers and take her on a date but she brought me along, wtf!
I was like 'what kind of stunt is this?!?' Amazingly, this b#tch was begging me to stay and I did for a little bit, but the husband was enraged and I finally left after a couple of minutes of confusion and her wanting to spend valentine's evening with both of us. No joke.
edit: I'm reluctant to admit this, but I think on a subconscious level, I was probably finding it rather hilarious and even a bit of an ego-boost seeing this guy getting viciously cucked in public to my benefit at his expense. Again, I don't like to admit this, but thought I would add this note to give a more complete and accurate picture of what was going on.
Oddly enough, he and I became good friends eventually. The dude loved the fact that I would call her out on her bullsh#t whenever she lied or spouted some outrageous bullsh#t. He wouldn't do it himself so he lived vicariously through me.
But before that, she insulted her husband behind his back in the most vicious ways possible, insulting his personality and appearance and character. After a while, he started to back me up and rely on me to call her out. Once that happened, the wife nixed the "friendship."