Former �Newlyweds� star Nick Lachey has revealed that his marriage to Jessica Simpson became more and more of a sham as their fame escalated.

Speaking to Rolling Stone, Lachey has admitted that filming �Newlyweds� together inevitably forced the couple part.

According to People magazine he said: "Jessica and I began playing these parts even when we were by ourselves,"

"It became a really blurred line. There was a question about what truly was our reality."

He has also revealed that he realised his marriage was over when his father-in-law Joe Simpson told him it was:  "I'll tell you how I knew my marriage was over: I was told."

Jessica allegedly told the singer over dinner last November: "I think I want a divorce."

"I basically said, 'Please, let's sleep on it.' But when we woke up the next day, Wednesday, she was still sure,"

It seems that Lachey was a bit of arm candy for Jessica, and yet he was so unsure of their relationship that to this day he does not know if she was sleeping with other men while they were married.

He said:  "I don't know if there were other men. But if she did cheat, it was the result of something bigger, not the reason we didn't work. ... Sometimes I think it would be easier if I had just walked in the house and found her in bed with a guy. That would be clear-cut. End of story. I wouldn't have to deal with the uncertainty of adultery."

And as for Jessica�s family, let�s face it, Lachey is well shot of them, on Jessica�s father Joe, he said: "I don't pretend to understand Joe,"

"I don't know if he ever liked me. To this day I couldn't say. It was painful. Do I think Joe drove a rift between us? No. Was he an influence in our marriage? Absolutely."

He is much better off without her�