Has there been a single child star in the history of showbusiness who hasn’t ended up on dope? In a tell-all interview on Monday’s Oprah, Valerie Bertinelli, the star of eighties sitcom “One Day at a Time,” will reveal that she cheated on her husband, rocker Eddie Van Halen, and snorted cocaine.

The interview airs the same day that Valerie’s motivational book, Losing It: And Gaining My Life Back One Pound at a Time hits stores.

Oprah asks, “So you got married?”

And Valerie responds, “And pass out in the honeymoon suite…..I cheated, too. He claims to this day that I cheated first, but I don’t know. I don’t know about the timing.”