The younger Kardashian tweeted: “Happy I got my Son with me for the 4th tomorrow !! Can't wait to watch fireworks with my little man ! Hope everyone is safe ! X.”
The confusing tweet comes after he wrote a couple of weeks ago: “And to my baby mama I loveeeeeeee you.”
This isn’t the first time that speculation has mounted over whether Rob has secretly become a dad.
He wrote on his Instagram page last year: “Shout to to God … Shout out Mom, shout out to my son’s mom cuz she been holding me down sincehigh school n shout out to my son Robert the Third. lol.”
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He also tweeted last year: “Bout to take time today to see the ones whom I never see. Love God. Love family.”
Kardashian family friend Nicole Ritchie tweeted back: “Like your son?”
Rob then replied: “My son unfortunately doesn’t stay in LA. You know that. Don’t remind me.”
At the time, an insider told Radar Online: “The possibility that Rob may have a child has been the buzz in the Kardashian circle for a while, but no one knows for sure. And no one will talk about it.”
If Rob does have a love child, the insider speculates that the mother might be attempting to raise their son outside the limelight.
**UPDATE
**
****Rob has since denied having a 'secret son', taking to Twitter writing: "Those who know me know I play and I do NOT have a Son. Y'all got my mama emailing me asking if I have a Son lol goodness hahaha. GOODnight."
Looks like he might have got himself in a bit of trouble with mum Kris, though!