Jared Fogle was a devious master at keeping his double lives separated ... according to his now ex-wife who's speaking out about his child porn conviction for the first time.
Kathleen McLaughlin says she was completely shocked the day FBI agents barged into their Indiana home with search warrants. She told "CBS This Morning" ... "He had 2 lives going on. He was able to keep those 2 very separate in a way I couldn't even fathom."
TMZ broke the story ... Kathleen sued Subway, accusing the sandwich giant of using him as its pitchman despite knowing he was a pedophile.