Valerie Bertinelli Cheated On Eddie Van Halen

Valerie Bertinelli endured a miserable marriage to rocker Eddie Van Halen — but she admitted to having her own affairs before finding true love with second husband Tom Vitale!

The former "One Day at a Time" star confessed that she became a cheating Hollywood wife during her 26-year marriage to the Van Halen guitarist — adding that Eddie also did plenty of straying while on the road with his hit band. "Five years into my marriage, Ed and I were barely doing it," said Valerie, but added: "If I had known then what I know now, I wouldn't have behaved in the same manner."

Valerie also said that things are a lot better with Tom, whom she married in 2011 — with the financial planner also encouraging the actress-turned-cookbook-author to ditch her showbiz diet! “In the past, Valerie always felt a lot of pressure to remain model thin,” the source said, with her weight creeping up after launching her Food Network show, “Valerie’s Home Cooking.”

But, added the insider, that all changed when Tom "told her he didn’t care." But there are still some strict rules in Valerie's marriage. "I won't ever cheat on Tom, and he won't ever cheat on me," Valerie's declared. "I believe that. And if he does — well, then it's over!"