Cristiano Ronaldo will never publicly reveal who his son's biological mother is.
The football superstar said he will tell his five-year-old son the truth when he is older, but the outside world will never know.
Speaking to ITV chat show host Jonathan Ross, he said: "I am sure he is going to understand 100%.
"I'm going to say when I feel that the time is right. When he is 10, 11, 12? I don't know, let's see.
"When he grows up, I am always going to tell him the truth because he deserves, because he is my son. But I am not going to say because people want me to say."
Asked if he thinks it's a problem his son does not have a relationship with his biological mother, he said: "For me it's not.
"In the world many kids don't have a mum, don't have dads, or dads die, mums die.
"Cristiano has a dad, an unbelievable dad."
The Real Madrid player, who split from model Irina Shayk after five years earlier this year, also revealed he has a "few" special someones in his life.
"And of the few specials, do they know they are competing?" Jonathan asked. "I need to figure out who is better," Ronaldo joked.
He added it was hard to meet people for a relationship as many just approached him for his fame, rather than him.
"I know 50% they approach just for interest, not just me, but all the people who are famous.
"But think I'm a confident guy, I'm tall, I have my own teeth, I have a nice body so I think the other 50% it's because they like me, yes."
The forward, who has earned the coveted Ballon d'Or award three times and currently holds the title, speaks good English now.
When he first came to England to play for Manchester United at the age of 18 he said had to get a translator to understand Sir Alex Ferguson.
"In the beginning I had a translator, a Brazilian man, of course. It was not to understand all English people, basically just him. But I still don't understand him."
Watch the full interview on The Jonathan Ross Show on ITV on Saturday from 9.45pm.