Ah, yes.
When I was in the Bahamas a while back, a fellow flew over to visit my host. He was a married guy, 3 grown children, owned his own business.
And, a gay friend of his who worked for an airline had listed him as his significant other. The visitor then got to fly free on standby whenever he wanted to.
It was explained to me that there was no sexual relationship between the two men, and it was a total ruse. I saw nothing that would have led me to believe the guy was gay.
Seemed to work.