Cheaters never win and winners never cheat.
But cheaters do make good celebrity gossip fodder, which is the reason we've covered so many of them in depth on our website.
Below, we rundown a number of known bad boyfriends and husbands (from golfers to Presidents; actors to reporters) and we send one simple message to them all, courtesy of their significant others:
Thompson is among the worst of the offenders listed here. Just click on the above name to read all about how he cheated on a PREGNANT Khloe Kardashian.
The President has admitted to having multiple affairs while married, dating back to his first union with Ivana. Most recently, a porn star named Stormy Daniels has gone on record with her naked Trump romp. (This guy is our President!)
Josh Duggar didn't merely admit to cheating on his wife. He admitted to being a client on Ashley Madison and to having an addiction to porn! Dude sucks.
Really, everyone else on this list is just playing for second place. The guy slept with every cocktail waitress who has ever served a drink. While he was married to a hottie!
We always knew Scott Disick was a drinker. But it came out in the summer of 2015 that he's also a cheater! Good riddance, dude!
Jesse James cheated on Sandra Bullock. But she eventually found his replacement: a little guy named Oscar.
Tori Spelling is the mother of his kids, but Dean McDermott has admitted to having another woman call him "daddy."
Ryan Phillippe cheated on Reese Witherspoon with Abbie Cornish. Who breaks the heart of America's Sweetheart?!?
We do not approve of Ashton Kutcher cheating on Demi Moore with a random blonde. But it did eventually land him Mila Kunis, so...
Click on Hart's name (above his photo here) and you'll be left with no doubt about Hart's dishonest actions.
Much to the continued shock of Robsten fans everywhere, Kristen Stewart blew it with Robert Pattinson in order to swap spit with Rupert Sanders.
LeAnn Rimes and Eddie Cibrian are now a happy couple. But they arrived their via an ugly mess.
Eddie Cibrian cheated on Brandi Glanville with LeAnn Rimes. Brandi will be glad to tell you all about it.
Kobe Bryant didn't merely cheat on his wife; he was accused of raping the women he slept with in Colorado.
Katharine McPhee was caught kissing Smash director Michael Morris while she was married. Dishonest AND stupid.
Jude Law cheated on Sienna Miller with their nanny. That's almost impressive!
Mario Lopez didn't just cheat on Ali Landry. He slept with someone else days before their wedding.
Lamar Odom didn't just go on a drug binge. He went on a binge with his penis during an ugly run in 2013, while still married to Khloe Kardashian.
We can't confirm this one. But Rob Kardashian says she slept with "like 20 dudes" while dating him. That's A LOT.
Nick Carter has admitted it: he cheated on Paris Hilton with Ashlee Simpson... a long time ago.
It's old news, but we know it's true: Brad Pitt did cheat on Jennifer Aniston with Angelina Jolie.
David Boreanaz slept with Rachel Uchitel while married. Yes, he has something in common with Tiger Woods.
Hank Baskett is accused of stepping out on Kendra Wilkinson. With a transgender model. While his wife was pregnant.
Once considered a top-tier candidate for U.S. President, former Senator John Edwards saw his career unravel after an affair, and love child, with Rielle Hunter.
Bill Clinton was impeached after an affair with Monica Lewinsky, one of his many rumored extramarital liaisons.
Warren G. Harding
Warren G. Harding, the 29th president of the United States, was quite the philanderer.
Mere months after Ciara gave birth to his son, Future cheated on the singer and she ended their engagement.
Oh, Hot Mugshot Guy. Click on the name above this picture to learn how he was blatantly caught cheating on his wife.