RESEARCH: 50 to 70 percent of people will have an affair in their lives

PHOENIX - Tiger Woods, Arnold Schwarzenegger, and now four-star Gen. David Petraeus are some of the latest high-profile, powerful men exposed for cheating on their wives.

Relationship experts say it shouldn't come as a surprise.

"Really smart, powerful people make incredibly stupid decisions when it comes to sex. The reality is that powerful men are no different from us. We need to look at  powerful men as just married men," relationship counselor Cesar Gamez said.

According to Gamez, whether it begins with emails, Facebook messages or personal encounters, married men are very inclined to cheat.

"Some research seems to indicate that 50 to 70 percent of people at some point will have an affair in their lives," Gamez said.

Even though it's technically illegal to commit adultery, it seldom calls for handcuffs.

"In 45 years here at International Counter Intelligence Services, I have never seen a single conviction related to infidelity," said private investigator Mike Rabern.

Rabern said he's not surprised Petreaus was fooling around. He's surprised how easily it was exposed.

"I think the CIA director should have done a better job keeping secrets secret," Rabern said.

He said now that this secret is out, others are bound to surface as well.

"It's quite a story. It's amazing to see this unfold. In this scandal, I don't think we've hit the tip of the iceberg of it," Rabern said.