I'm being paid to take a guys virginity but he's not a virgin. Should I say something?

[purplepoppy]

I've been approached by this couple wanting me to give their son (20) a good time. Basically he's never had a girlfriend and they're concerned that he might be gay. Before you judge them on that remember they're in their late 40s and raised in different times. I'm happy to have sex with him for the money but I know for a fact he isn't gay or a virgin. He just likes the single life with the occasional one night stand. Do I tell them the truth and hope they'll still pay me or would they want a discount or even cancel the whole thing?

[Anonymous]

You think you had sex with him before? How do you forget about the people you fuck?