Her husband betraying her will hurt her deeply, but imagine if her "best friend" is in on it too. She'll open up to me, confide in me, and she'll never suspect my ulterior motives. Your heart will be racing while we're out for an afternoon of pampering and you're covering my expenses while your unsuspecting wife is at my side. Her heart will absolutely shatter when she finds out I was never her friend, but I was always your mistress.