India, Feb. 13 -- For the most part, cheating on a partner has been easy to spot. Miley Cyrus sang, "You smell like perfume that I didn't purchase" on Muddy Feet. Whitney Houston's It's Not Right But It's Okay used a credit card receipt to expose her bae : "If six of y'all went out/ Then four of you were really cheap/Cause only two of you had dinner". Shaggy's It Wasn't Me, 26 years on, literally outlines all the places in the house he was caught "creepin' with the girl next door".

Now, it's possible to "look but never touch" as an OF subscriber. It's easier to anonymously swipe though 25 Bumble profiles in one night. There are polycules, throuples, emotional affairs, long-term booty calls and situationships. Cheating isn't about bodies,...