When you got home from work, you saw that there was an unfamiliar car in your driveway, and when you went upstairs, your wife's best friend was sitting outside your bedroom, apparently waiting for you. And from the sounds you could hear emanating from the bedroom, your realized that your wife was making good on her threat to cuckold you because of your inadequate performance in that same bedroom.
"And what is best for your marriage will be for you to accept that what you can hear occurring in your bedroom right now is something that is going to happen a lot in the future."
As you listened more to the sounds of passion, you knew that she was right and you put your head in your hands and started to cry. Your wife's best friend put her arm around you to comfort you a bit, but then also laughed and said --
"You really have only yourself to blame, you know."
[inspired by a MsTara cap from the other site ]