In the past, the America's Got Talent judge repeatedly said he didn't want children, but he did a complete U-turn after becoming a father to his only child when parenthood became his priority.
So-much-so, that Simon says another kid could be on the cards - and he's hinted at it more than once.
Most recently, the music mogul told The Sun: "Just two days ago I was thinking, 'It would be nice to have another.'" he said. "Being a dad is the best thing that's ever happened to me. I love every second I spend with him. So then I'm thinking the next step is he's going to be a teenager. Those years when they're young — I had such an amazing experience all through those years, and I was thinking about it probably because of that."
Simon continued: "Eric has got a lot of friends and we do a lot of things together as a family. But you never know with kids if they're happy being on their own or how would he feel if there was another one? So look, will it happen? I don't know. But I would love another kid. I really like being a dad."
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While Simon is a dad-of-one, Lauren has a son Adam, 17, from her previous relationship with Adam Silverman and he has a strong bond with his half-brother, Eric.
In 2018, Simon teased baby number two by telling The Mirror: "If you’d have asked five years ago would I have one now, I’d be thinking, 'I might have left it a bit late'. But once you’ve had one you think, how could you imagine him not being here? So when it happens, it happens."
The TV star continued: "I can’t really think about life before Eric, so yes I would consider another child."
He's not the only one who would like to add to their brood as Lauren spoke exclusively to HELLO! in 2015, revealing: "I think if you have one child it would be lovely to have a girl.
"When I was pregnant with Eric I was told by the doctors he was a girl. But he just fooled them. There were a few names floating around but we had our name picked out and it would be lovely to have a girl."
She jokingly added: "The only problem is that I will feel sorry for her when she is older because she won't be able to leave the house, and no man would dare come near here because Simon would be so protective."
For more photos of Simon and his family through the years see below.
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