A dad had no idea he wasnt the biological father of his three sons for 21 years.
Richard Mason, 55, was shocked when he found out his wife had cheated on him and his children had another natural father.
He had gotten a DNA test three years ago after doctors told him he was suffering from cystic fibrosis, which had made him infertile all his life.
His ex-wife Mrs Mason admitted the affair through a text, telling him: In spite of what you think I am very sorry that you have been caused such an emotional upheaval.
MoneySupermarket.com co-founder Mr Mason was not happy he had been deceived and decided to sue her for paternity fraud.
He has now accepted a £250,000 out of court settlement from his former partner, which is a fraction of the £4 million he wanted back from their 2006 divorce agreement.
He told The Mail on Sunday: You dont know whats real and what isnt — its as if Im living in The Matrix.
Someone says to you, “All you know and everything you thought solid and true is not real, and never did exist. You are not a father, you are not able to have kids, your name will not continue”.
Mr Mason, from Rhos, North Wales, no longer sees two of his sons who have stopped contact.
He has twin sons, aged 19, and another son, 23, who did not give a sample for the DNA test.
Mr Mason added: I still see what the boys are doing on Facebook and its heart-wrenching. Its all been taken away from me.
Mrs Mason was not required to name her childrens biological dad during the court case and she did not reveal if he knew he was their father.
Mr Mason has since found love with new wife Emma.