Ex-Wife of Disgraced Subway Pitchman Jared Fogle Opens Up About His Sex Crimes: 'He Had 2 Lives'

Katie McLaughlin says she only found out about her former Subway spokesman husband's dark secret when the FBI came knocking on her door.

The ex-wife of disgraced former Subway spokesman Jared Fogle has spoken out, saying that the convicted pedophile was leading a double life.

"He had two lives going on. You know, he was home with the kids and I in one life and he was out on the road in a different life, and he was able to keep those two very separate in a way that I couldn’t even fathom," Katie McLaughlin, formerly Katie Fogle, tells CBS.

Read: Subway's Ex-Spokesman Jared Fogle Agrees to Plead Guilty to Sex with Minor

McLaughlin, who divorced Fogle in late 2015, says she was as shocked as the rest of the world when the man known by millions as Subway Jared was revealed as a sex offender who had sex with underage girls and distributed child pornography.

According to McLaughlin, she learned of her husband's other life on that day in July 2015 when the FBI knocked on her door in Indiana.

"I didn’t understand any of it to be honest," McLaughlin said. "I mean you just — you float out of yourself because the FBI shouldn’t be in your house."

Fogle was convicted of having sex with minors and for possessing child pornography. In November, he was sentenced to 15 years in prison.

According to court documents, Fogle traveled from his home in Indiana to some Manhattan hotels, including the Plaza and the Ritz Carlton, to have sex with underage girls.

Under a plea deal, he would serve between five and 12 years behind bars and pay $1.4 million in restitution to 14 minor victims, register as a sex offender and undergo treatment for sexual disorders.

McLaughlin says she's sure Fogle never touched either of their two children inappropriately.

Read: Jared the Subway Guy's Home Raided by FBI as Part of Criminal Investigation

Now, as she seeks to rebuild her own life, McLaughlin has targeted the Subway company with a lawsuit that alleges she, and the world, should have known about Fogle sooner.

McLaughlin's court filing argues the company was alerted to potential problems with Fogle on three occasions in 2004, 2008 and 2011.

Fogle rose to fame in 2000, when he first appeared in TV ads for the sandwich chain with claims that he had lost about 200 pounds on "the Subway diet."

The company has declined to comment on the case, but previously the company has said that there was “no evidence... of any prior issues” regarding Fogle.

Watch: Jared Fogle's Divorce Docs: 'Irretrievable Breakdown of the Marriage'