Men letting their wives fuck other men

This evening I had a call with some older guy. It was his first time calling for phone sex. So I asked him what turns him on and what type of women did he like. He told me that he liked all types of women as long as they had nice breast and a shaved pussy. So we went on and on and he began talking about his wife. He told me that his wife is a whore that fucks other men at her job. WTF I wondered. I couldn't believe this guy was okay with his wife sleeping with other men. Then my jaw almost hit the ground when he told me that he even watches as his wife has sex with his best friend. I couldn't believe it. I asked him why did he let his wife have sex with other men. I figured this guy had some kind of low self-esteem problem or a mental problem. Then he told me that he get turned on watching his wife get fucked by other men in his home. He said he usually watch and masturbate while his wife is bent over getting cock in her ass. I guess I'm still young cause I didn't know too much about cuckolding. I see it in a lot of listings on niteflirt, but I never knew people really lived that type of life. We spoke for another 10 minutes and he said he would call me back later. I'm still in shock. If he would have told me that he and his wife had sex with another woman, I would have understood. But this is so different to me.