Nick Lachey has "scars" from his marriage to Jessica Simpson

Speaking to a contestant on Netflix's 'The Ultimatum', he said: "I, too, was previously married, divorced, so I understand the hurt, the scars that exist from that...

"Don't let your past define your future. What I truly always wanted in my life, which was to have a beautiful marriage and a beautiful family, if I hadn't retained my belief in that, I wouldn't have ever realised the beautiful life I have with this woman."

Vanessa, 44, previously admitted she had issued an ultimatum to Nick, now 51, to get married or end their relationship after they had been together for five years, but she subsequently realised she had some growing up to do herself first.

She said: "I've talked about the fact that I've given an ultimatum. But what I've never talked about is what I actually truly did.

"I kept pointing the finger, and I took that finger and I turned it to myself. And then I had to say, 'What am I not giving him?' I'm not giving him the respect that I'm asking. I'm not giving him the communication that I want.

"There's an age gap and I was still going out and partying with my girls, and I'm telling him I want to be a mom? He's like, 'Cool, OK, so I'll see you at 2:30 when you get home?'"

The couple - who are parents to Camden, 12, Brooklyn, nine, and seven-year-old Phoenix - ultimately tied the knot in 2011 and though they are happy together, they admitted marriage isn't always plain sailing.

Vanessa said: "We are both Scorpios, we're stubborn. Same birthday, so you can imagine the therapy sessions."

Nick added: "We sit up here, we don't have it figured out. We struggle all the time."

His wife then admitted: "We had a fight last night, getting ready for here, but we had to clear the air."