I put this under my "what were you thinking" category of situations. One of Dateline's To Catch a Predator predators was arrested for attempting to meet a 14-year-old virgin for sex. While none of us can really know who we are in love with, once we are fortunate enough to learn something we should have known, we can run and not walk as fast as we can in the opposite direction.
Sex predator: News: glamour.com
In addition, while this article states it is the first time the spouse of opne of the people caught in the sting came forward, it's not. Chris Hansen's book of the same name as his Dateline series, To Catch A Predator, tells the story of another woman who learned that her spouse was arrested after being caught on camera.
She left him, as fast as she could. No looking back. No second thoughts.