Teen Mom Farrah's Shocking Family Secret

On Teen Mom, Farrah Abraham's father Michael is so calm and level-headed that he seems like he couldn't hurt a fly, but Star has learned that Michael allegedly beat up Farrah's ex-boyfriend twice after catching them in bed together!

When Farrah was dating her baby Sophia's now deceased father, Derek Underwood, her dad allegedly went after the 16-year-old with his fists, according to police reports. In a photo obtained by Star, Derek is even seen with a black eye and swollen cheek.

Michael — who maintains his innocence — never had to face a judge though, because, as Star recently reported, Derek died tragically in a car accident on Dec. 28, 2008. In a statement to Star, Michael said in part, "I have always protected my daughter Farrah and my granddaughter, Sophia — her unborn child at the time — as I have had to, will, and always will to protect my family from harm."

Pick up this week's issue of Star, on sale now, to read the rest of Michael's statement and get all the details on Farrah's family drama.