My wife has a Greek friend who took her to a wedding for a weekend. They'd been flirting for ages. He knew I was a cuck and did not hesitate to exploit that fact for his sexual gain. She wanted to him to conquer her, but more than that, she wanted me to see her become another man's whore.
One of my favourite cuckold moments I've caught on video - my wife telling me to stay in my lane while her new lover at the time fucked her senseless for a whole night at the hotel.