Jack is believed to have met beautiful model Danielle through his older brother Conor.
Aside from her raunchy modelling work, Danielle enjoyed her 'five minutes' on this summer's smash hit reality show Love Island.
He was subsequently accused of sending inappropriate messages to a 14-year-old girl when he was 16, persistently asking her to send pictures in her bra.
The younger brother of popstar Conor Maynard apologised for the 'disgusting things' he had done on Thursday in a new You Tube video, and said he felt 'ashamed'.
Despite claims of a relationship with Jack, Danielle went into the dating show as a single lady.
They've both enjoyed equally unsuccessful, fleeting stints on reality TV in the last seven months.
But axed I'm A Celebrity star Jack Maynard and one-time Love Island contestant Danielle Sellers are now believed to have been in a secret relationship throughout, with their last sighting together being just weeks before Jack entered the jungle.
The video, which was uploaded to Jack’s You Tube account in September, was still available to view three days before Jack entered the I’m A Celebrity jungle but has now been pulled down.
His You Tube channel has 1.2 millions subscribers and his Instagram page 790,000 followers, mostly teenage girls.