Jared Fogle’s ex-wife says she knew nothing about her husband’s FBI investigation until agents entered their Indiana home with search warrants.

"He had two lives going on. He was able to keep those two very separate in a way I couldn't even fathom," Kathleen McLaughlin told "CBS This Morning" last week.

>> Ex-Subway spokesman Jared Fogle's ex-wife sues sandwich chain

The former Subway spokesman was sentenced to 15 years in federal prison for charges of child pornography and soliciting minors. McLaughlin is now suing the sandwich chain, claiming that it knew about Fogle’s perversion for longer than it let on.

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The CBS interview is McLaughlin’s first time speaking out about Fogle’s child porn conviction.

>> Click here to watch the interview