The 34-year-old said that their disagreements can get intense – especially when it comes to money.
Speaking to OK! Magazine, mum-of-four Kerry said: “They can get really explosive. Generally just bickering but then there is a flashpoint and they explode.”
Confessing that their finances are often the cause, the Atomic Kitten singer added: “Some of my bills are that big, I’m going to start calling them William!”
Kerry has always been open about her money struggles and insisted she always tries to live within her means.
The couple, who are parents to daughter Dylan-Jorge, were recently snapped getting into a heated argument – and Kerry revealed it was because George believes she should ‘keep up appearances’.
She said: “It was all about the car we were in at the time. George thinks as I’m a celebrity I should have a certain standard of car, but I think we just need a car that can get us from A to B.”
But, despite their problems, the former Queen of the Jungle claimed she and her husband are very much on love.
She added: “George and I are very affectionate. We are passionate, so you can imagine what we are like when we start rowing. After we’ve had a row, we’ll make it up in the bedroom.”