Donald Trump does not play by the rules, whether it comes to finance, marriage, and the general standards of human decency. Why, then, would we expect him to obey the rules of a presidential debate?

At least two people in a pool of 37 million Ashley Madison users outed as potential adulterers this week have committed suicide, police say, though it’s reportedly still unclear whether their deaths were a direct result of the hack.

According to the least surprising study ever, college students who cheat are attracted to politics and more likely to want government jobs than non-cheating students.

Police in Chicago say a man who caught another man in bed with his girlfriend decided to teach him a "lesson" by setting his balls on fire.

That guilty twinge you feel when you cheat on something? Probably never happened. Because you love cheating. Cheating feels great.

Today Washington Post columnist Richard Cohen, the paper's resident expert on racism and sexism who should be immediately fired by new owner Jeff Bezos, delves deep into the mysteries of the human heart to explain why Huma Abedin continues to stand by Anthony Weiner. He's been there, brother. See, there was this chick, "Linda," who cheated on him "a long time ago."

Which comes first—wanting to commit adultery, or a taste for the cold butter, cumbersome menus, and slippery leather seating of overpriced midtown restaurants? Who is to know if one prompted the other, but the two are related.

This video comes with very little context, but here's what we do know: This guy's girlfriend cheated on him; he is very upset about that; he doesn't care who knows it.

In 1996, cycling champion Lance Armstrong was diagnosed with cancer. By 1999, he had recovered and made a miraculous return to win the Tour de France. Five years later, the LIVESTRONG charity, which battles cancer, started distributing yellow rubber bracelets emblazoned with "LIVESTRONG" in honor of Armstrong's courage and tenacity. And now, eight long years later, it's time to cut that dirty motherfucking bracelet off your wrist and throw it into the trash.

For a while, it looked like the Seal-Heidi Klum divorce was going to be an impressively civil parting of ways.

Getting caught cheating via paparazzi is all the rage: Kristen Stewart started the trend, and Anderson Cooper's boyfriend Ben Maisani is carrying it on.

Kristen Stewart has made a cuckold of Robert Pattinson. But how long was the affair going on before she and Sanders got caught? Sources close to Stewart maintained that it started just weeks ago, but also that she and Sanders had only made out; does this look like the arching back of someone who only just made out? No way.

Kristen Stewart cheated on Robert Pattinson with Snow White and the Huntsmen director Rupert Sanders. Rupert Sanders cheated on his wife Liberty Ross with Kristen Stewart. And both, under the spell of some mysterious PR draught, issued statements within minutes of each other apologizing to their cheatees.

Political widower with a wandering penis John Edwards has denied a DNAInfo report claiming he purchased sex from accused New York "Millionaire Madam" Anna Gristina. His lawyer announced last night,

James "this loser" Kolb should be more careful about the computer-savvy women he double crosses. His wife took to Craigslist after finding pictures of James posing with a woman, presumably his girlfriend. Revenge is a dish best posted on the Internet. With the good-for-nothing's full name and location.

If you set aside the five or so hours it took to download Apple's iOS 5 this weekend, you were richly rewarded with a suite of new functions for your favorite brain-cancer-hastening communications device. And none were niftier than "Find My Friends" — appointed in the finest iNaugahyde, it's an app that allows you to plot your friends on a map as if they were enemy ships on a blinking radar screen.

What happens when America's calmest woman falls in love with America's most hilariously entitled dude? They get married! She gets pregnant! He cheats on her and leaves her! And then, letters like this, to Washington Post advice columnist Carolyn Hax:

The director of the prestigious London School of Economics resigned today amidst a scandal over his and the school's shameful coziness with homicidal Libyan dictator Colonel Qaddafi. The LSE accepted nearly $2.5 million in donations from Qaddafi-run charitable foundations, which is bad enough. But it also gave Qaddafi's high-rolling son, Saif al-Islam, a PhD. in economics for what appears to be a plagiarized thesis.

A Google engineer suggests Bing may be pilfering the search giant's results, and has showed the results of Google's digital sting as proof. Bing says the results offer little more than a lesson in "click fraud." Shots fired!

We've learned the identity of the sadsack American reporter who had his girlfriend stolen from under his nose by leaking lothario Julian Assange during a visit to Sweden last year: Vanity Fair contributor and Family of Secrets author Russ Baker.