Kyle Sandilands admits 'cracks are already starting to show' just one week after his wedding

It looks like the honeymoon is officially over for Kyle Sandilands and his bride Tegan Kynaston.

The divisive radio host revealed that he and Tegan had an explosive argument about his health and diet just one week after their wedding.

Kyle joked that cracks are 'starting to show' while speaking to his co-host on KISS FM's The Kyle and Jackie O Show.

While the 51-year-old shed an impressive 20kg before his big day, he shared that he still has the ol’ sweet tooth.

“I bought a Milka chocolate; it's thinner and family size. I gnawed through it like a rat with cheese,” Kyle said.

“[Tegan] runs towards me and physically wrestles me. I sat there like an anchor and she twisted my arm until I let it go and I was like, ‘What carry on is this?’

“I said my blood pressure is through the roof, and I went out for a cigarette.”

He said that Tegan prefers for him to instead snack on some wholemeal Saladas instead of chocolate.

He added: “She told me to have a glass of water. I'm too old. I only eat what I eat, I don't give a s**t, it's too late for me to change - I am me.”

My god, who knew a chocolate bar could be such a catalyst?

The couple, who share a son together, had their nuptials on April 29 at Sydney's Darling Point in a ceremony that famously cost around AUD $1 million (£537,877).

They had a star-studded guest list, including Guy Sebastian, Karl Stefanovic and even Prime Minister Anthony Albanese.

Kyle lost an excessive amount of kilos before the wedding, which was revealed when he weighed himself on air.

"You were 140kg at your biggest. You look good, and you are definitely not like you used to be," Jackie O said during the live segment.

Once Kyle stepped onto the scale, Jackie O announced: "Oh, my God, you're 20kg lighter!"

"That's without any effort and I didn't get paid $1 million from Weight Watchers, and I've still done it," he added while poking fun at the weight loss program for which his co-host is an ambassador.

His comments came after Jackie O shed 12kg when she altered her diet and lifestyle after partnering up with Weight Watchers.