Kelsey Grammer had a nasty split with Camille Grammer — so he could marry his much-younger new wife Kayte Walsh
Jennifer Aniston is alleged to have stolen Justin Theroux from his girlfriend of 14 years, Heidi Bivens.
Ryan Phillippe cheated on Reese Witherspoon with Abbie Cornish.
Robert Pattinson was allegedly dating Nikki Reed when he met his love Kristen Stewart.
Demi Lovato was in love with Joe Jonas, but he dumped her for Ashley Greene.
Jesse James cheated on on Sandra Bullock with a tattooed stripper named Michelle Bombshell’ McGee.
LeAnn Rimes allegedly cheated on her husband Dean Sheremet with her costar Eddie Cibrian, to whom she is now married.
Billy Ray Cyrus split with his wife Tish after her dalliance with Bret Michaels, but they’re now reconciling.
Tiger Woods, Elin Nordegren and his sexy mistress, Rachel Uchitel.