The 56-year-old "X Factor" judge said he hadn't "planned" to have son with his partner Lauren but his whole life was turned upside down when his son was born, reported Femalefirst.
"This was not something I planned. But I remember going to the first scan with Lauren. I called him Tad because he looked like a tadpole. Something just kicked in. I felt unbelievably protective of both of them. I just absolutely wanted him. I just hadn't known that before.