"It's someone who not only gets turned on when their spouse or girlfriend has sex with another man, but might even prefer it if she did. They prefer relationships where their significant other is what's called a hotwife, who engages in sex with men other than the one she's married to. It's not quite the same as an open marriage usually, where both spouses are free to have sex with other people. Usually, the cuckold isn't allowed sex outside of his marriage. Only the female is allowed to seek other lovers. The cuckold usually has a more submissive role in the marriage."

"How would I find out?"

"Give up sex...