Nick Lachey & Jessica Simpson
“Newlyweds: Nick & Jessica” producer talked about the tension that led to Nick Lachey and Jessica Simpson’s divorce. Pictured: Ex-couple attends the “Gucci Spring 2006 Fashion Show Benefitting The Childrens Action Network” at Michael Chow’s residence Nov. 17, 2005. Getty Images/Mark Mainz

There was already a lot of tension between Jessica Simpson and ex-husband Nick Lachey before they even filed for divorce.

Sue Kolinsky, the producer of Simpson and Lachey’s reality show “Newlyweds: Nick & Jessica,” has finallyopened up about what really went down before and during the exes’ split. She also shared what it was like working with the two stars, whom she found to be very different from each other.

The producer shared that she believes it was their differences that eventually drove them apart. “You could feel there was tension between the two of them,” Kolinsky told Complex. “They were very different people. He was a blue collar guy — he did a lot of things himself, like he and his brother [Drew Lachey] would build things. He was frugal, and she had excessive taste. In the end, they weren’t suited for each other. The only thing they really had in common was their music.”

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The three-time Emmy-nominated producer also believed that Simpson had been too young at that time for marriage. The former 98 Degrees member was seven years older than the “With You” singer and had already been eager to start a family. Meanwhile, Simpson was still dependent on her dad. He father was reportedly very involved in her life.

Despite the apparent tension she observed, Kolinsky also recalled a lot of funny moments on set, most of which were the result of Simpson’s naïve personality. “There were times when we were like, ‘Hm, does she really not know what this means?’” the producer added. “I truly believe the whole ‘chicken and fish’ situation was accurate. She really did not know. I remember there was a scene where there was a dead mouse by their pool and it had been dead for a while. Nick said, ‘It’s in rigor mortis,’ and Jessica said, ‘Riga-what?’ I truly believe she didn’t know what that meant.”

Simpson and Lachey got married in 2002 and divorced in 2006. They have both moved on from each other and are now happy with their new families. The “A Public Affair” songstress is now married to Eric Johnson, with whom she shares two children: Maxwell Drew, 5, and Ace Knute, 4. Meanwhile, Lachey is married to Vanessa Minnillo, Daily Mail reported. They share three kids: Camden John, 4, Brooklyn Elisabeth, 2, and Phoenix Robert, 1.

It seems that both singers have a lot of regrets when it comes to their marriage. When Simpson was asked about her biggest “money mistake,” for some reason the singer mentioned her first marriage.

Lachey, meanwhile, revealed to Us Weekly that he thought it was best that they didn’t have kids. He also admitted that he and Simpson are not on speaking terms. “We both moved on with our lives…it’s not animosity, it’s not friendship, it’s just kind of nothing,” the father-of-three explained.

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