Book:
Some one lied and the other person found out.Typical book. In the book Bryce does it because he was a fraud and couldn't tell Juli he didn't want them and because he didn't want to hurt her feelings.

Real life:
Half the time they don't figure out that you lied. But when they do you may loose friends and people that trust you. in the article the husband tries to hide it from her to keep her away from stress and worry.

Compare

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Both:
They both caused problems.