Did Bret Michaels Have An Affair With Miley's Mom?

Rocker-reality TV star-ladies' man Bret Michaels can add a new description to his resume: Homewrecker.

The Poison frontman reportedly shared his rock of love earlier this year with Miley Cyrus' mom, Tish, who has been married to Miley's dad Billy Ray for the past 17 years.

An insider told Us Magazine that Michaels "became close to the entire family" in February, when he and Miley released their duet, "Nothing to Lose." Apparently, their song title also described Tish's attitude toward her marriage. She allegedly carried on some sort of behind-the-scenes fling with Michaels, and was spotted attending one of his shows in L.A.

Billy Ray filed for divorce last week after finding out about the affair with Michaels and one other reported fling.

"Billy Ray was completely unaware of what was going on," the source says of the formerly-mulleted singer, whose heart is probably both achy and breaky these days. Billy Ray is seeking joint custody of their three children, Miley (who turns 18 Nov. 23), Braison, 16, and Noah, 10.

Reps for Michaels and Tish both deny any affair took place. But we've seen Michaels turn out many a lady, so in the question of "affair or no affair?" we are leaning strongly toward the former.

By the way, Michaels' new reality show, Life As I Know It, airs at 10 p.m. Mondays on VH1.