ДНК S06E42 - Выпуск 759. Семь детей не от мужа?

Before the divorce, the father of seven children decided to find out how many heirs he had by blood out of seven registered in his name. His ex-wife, the mother of nine children, does not deny: there were infidelities, but she gave birth to her husband. Why did a father with many children suddenly decide to have a genetic examination after 12 years of marriage?