But, this kind of thing happens more often than you think when babies are born out of wedlock.
Daily Mail
An engaged couple who dated for five years have been left in turmoil after their families met and they discovered they were brother and sister.
The woman, who is due to give birth next month, is devastated by the discovery that the father of her child is her brother.
The couple, who met at university, had decided they wanted to introduce their single parent families to each other before they got married.
But at the meeting it emerged they were brother and sister who had been separated as small children.
The unnamed South African couple are still in shock after making the discovery last Saturday.
More here
This wouldn’t be an issue if people thought more about the ramifications of just having babies outside of marriage.
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