Boudoir Payment
Your wife tells you that one of her work friends has asked her to join in a kind of boudoir photo shoot for her friend's boyfriend. You really don't like the idea of some other guy seeing sexy pictures of your wife, but she convinces you with the argument that you will get to see naughty pics of her friend as well. You have always found that friend attractive, so you relent. After she shares the pictures, you decide it was worth it because so what if someone looks at your wife's pictures. However, you will never see pictures of or even be aware of the 2nd photo shoot that paid for the first.