Bride Caught in the Act

Feb. 26, 2008— -- Would you tell your good friend if you saw his or her significant other canoodling with a complete stranger?

ABC News recruited six couples and asked them to pretend to cheat on their mate in front of an unsuspecting best friend.

We set up our experiment at an Italian restaurant in New York's Greenwich Village rigged with hidden cameras.

In our first experiment we watched as Kylie witnessed her best friend's boyfriend entwined with another woman — and bravely broke the news to her friend Mary Ellen.

But what if the cheater is a woman engaged to be married? And suppose the guy who is about to catch her in the act is the best man in her wedding?

Jay Reyes was the "best man to be" at Kyong — a.k.a. Kookie — Ko and Carmelo Vasquez' wedding. He was brought to the restaurant by his wife, Carolyn Foster. Carolyn was in on the experiment and so were the bride and groom. Kookie, the bride, became cozy with the stranger — an actor hired by ABC News. Jay had no idea it was all an experiment and that hidden cameras were rolling.

Before the experiment began, we asked the engaged couple what thought Jay would do, including what they would think if he didn't say anything. "Oh, then you'll have to cut your cameras," Carmelo joked, admitting he would be a bit upset if Jay did not tell him.

It took 10 minutes for Jay to spot the cheating bride-to-be canoodling with our actor. Jay peered through a mirror on a nearby wall and panicked.

"Oh my God," Jay exclaimed. "What do I do? Oh my God."

Again, we added a twist. Jay' best friend Carmelo — who was being cheated on — made plans to join him for dinner at that very restaurant. Carmelo would arrive at the restaurant at any moment, increasing the stakes for disaster. Jay decided to send him a text message asking if he knew of Kookie's whereabouts.

Since Carmelo was in on the experiment, he responded by saying that his fiance had to take care of something after work. Jay looked up from his text and shuddered at the sight of our actor playing with Kookie's hair. When Jay assumed Carmelo was just blocks away, a look of horror crossed his face. He turned to his wife and said that if he were the one being cheated on, he would want somebody to tell him.