A US woman caught her boyfriend cheating when his Fitbit activity spiked at 4 a.m.

Infidelity isn't the only possible reason for a late-night heart rate spike. Activity...

Writers in Kenya are earning up to R30,000 per month for helping American college students cheat

The essay-for-hire industry produces millions of essays made-to-order for college...

A star chess player admitted to cheating with his phone on the toilet at a tournament

The chess grandmaster admitted that though they are typically banned, a phone found in a...

In Taiwan and Rwanda being unfaithful can land you in jail or with a hefty fine. Here are 19 cheating laws around the world.

An affair can strain or break a relationship. But in some places, the repercussions can...

6 questions to ask yourself before telling your partner you cheated on them

Before you tell your partner you cheated, ask yourself these therapist-suggested...

The infidelity dating site Ashley Madison now has 60 million users. Two men told us why they use it.

"Outsource your sex life."

Christmas is the most popular time of year for people to cheat, and the office holiday party is a notorious place to do it

If your partner avoids eye contact, seems unusually chipper, or avoids displays of...

It turns out cheating might be genetic — here's what you need to know

But just because someone's genes make them more inclined to cheat doesn't necessarily...