A friend like Risako-san is every husband's nightmare. I hope no one in real life ever encounters such person.
Welp, at least the mindset displayed at the end happens in real life. I don't think there's a bigger way to humilate your man. Anyways, I've posted this link before.
Of course, whenever one is finally found out doing this, I would expect her good social standing is flushed down the commode of reputation abyss, including family/relatives.
Still the artist did a great job conveying her growing lust, great work Kirimoto Yuuji-sensei!