The One Direction heartthrob and former X Factor judge Cheryl welcomed Bear together in 2017, before splitting up in 2018.
They rarely give fans a peek at the four-year-old's life but according to the Daily Mail, Payne opened up about him during a chat on Heart radio.
The singer, 28, revealed that Bear is already keen on music and said that while he would never stop him from pursuing what he loves, the thought of his son following him into the music industry does worry him a little bit.
He also shared that Bear has already started making music.
“Cheryl walked in the other day, and he was in his bedroom, it was about 9 o'clock, and he was supposed to be asleep,” he said.
“He’d set his iPad out on the floor, and you could see the little red line going and she was like, 'What are you doing?' and he was like, 'I’m recording a song, can you not see?'"
He went on: “I mean, it scares me a little bit because I know what that can do to you and, in certain places with things.”
The star also said that he and Cheryl aren't all that keen on Bear being in the spotlight like they are.
Watch: Liam Payne and Louis Tomlinson want One Direction to reunite soon