So, we finally had a wedding and it was amazing. We come back upstairs to finalise our vows but I admit to you, that I know longer love you and that I don't find you sexually attractive at all. I finally admit that I have been fucking the best man this entire time.

Its ok, that turns you on doesn't it? You love the idea of someone pleasuring your wife, don't you? Especially, knowing that big your best mans cock is.