WAS BRET MICHAELS MESSING AROUND WITH MILEY CYRUS' MOM?
A source says the reason why Billy Ray Cyrus and wife Tish broke up was because she had an affair with rocker Bret Michaels.
The source says the Poison frontman became close to the entire family" this past February when he and Miley released the duet "Nothing to Lose".
The source says that is when Tish and Michaels started their affair. And when Billy Ray found out, he filed for divorce.
A rep for Tish denies the affair.