More Shocking Claims! Rumer Willis' Ex Accuses Demi Moore Of Threatening To 'Destroy' Him Amid Custody Battle!

Rumer Willis' custody battle with Derek Richard Thomas is getting messier! As we have been reporting, the 37-year-old actress and her ex-boyfriend/baby daddy have been making alarming allegations against each other back and forth since their breakup as they fight over custody of their 3-year-old daughter, Louetta. Some of which, however, came from Rumer's mom, Demi Moore, who accused Derek of making the baby's birth all about himself, throwing a huge tantrum, and getting angry when she tried to help the new parents afterward in a declaration to back her up. Related: Kim Zolciak Accuses . . .