Kieran Hayler has refused to confirm he is the biological father of Jett, whom he shares with ex-wife Katie Price.
Kieran, who believes Katie cheated on him during their marriage, claims former Glamour model Katie forced him to take a paternity test.
The dad-of-two said he doesn't feel ready to reveal the results from the test but said "maybe one day they'll be released".
In an interview with The Sun, Kieran said of the test results: "Maybe one day they'll be released. But I'm not going to reveal the results of that paternity test. It was just for me. It's for me and that's it.
He said that Katie's insistence that he took one made him suspect she had been unfaithful.
Kieran added: "It led me to believe she had cheated on me before I cheated on her. But that's all really I can say because I don't know for certain."
I'm not going to reveal the results of that paternity test.
ED! has contacted representatives for Kieran and Katie for comment.
Katie has previously said the couple were "insulted" by claims that Kieran had taken a paternity test for Jett, who was born in August 2013.
She told OK! magazine: "It's ridiculous and not nice for Jett when he grows up.
"He's definitely the father, you don't even need to justify it."
Kieran recently said he believes Katie has made the right decision to go into rehab, where she is getting treatment for PTSD.
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Kieran and Katie married in January 2013 in the Bahamas after a whirlwind romance, but their relationship experienced several rocky patches before they split for good in May this year.
Former plasterer and stripper Kieran cheated on a pregnant Katie with her best friend in 2014. A further allegation of infidelity surfaced earlier this year, when Katie accused Kieran of getting close to a 19-year-old shop worker.
Katie announced their split in May.
It's believed Kieran is looking after their two children, Jett, five, and Bunny, four, while Katie is in rehab.
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