Many dads will be celebrating Father's Day with children that they didn't produce, according to AshleyMadison.com.
The dating site carried a survey on 102,137 of its female members to know if they have been pregnant with another man's child and passed the baby off as their husband's, the Huffington Post reported.
Nine percent of them admitted that they had done so, and that their husbands are not aware of it.
Another 16 percent revealed that they are not sure about the father of their baby.
And 72.4 percent women have a doubt about the father of their youngest child.
The press release also claimed that Father's Day is one of the busiest days of the year for the site possibly because of these paternity issues.