Top 10 shocking celebrity breakups

10. Britney Spears and Kevin Federline

From their love of fast food to their two adorable kids, we thought Britney Spears and Kevin Federline were a couple made for each other -- until Brit suddenly filed for divorce in 2006, citing "irreconcilable differences." Britney's downward spiral of head-shaving to her very public breakdown was hard to watch -- yet we couldn't look away.

9. George Lopez and Ann Lopez

Even a kidney was not enough to keep the 17-year marriage alive between the comedian and his wife. She donated a kidney to him in 2005, but in 2010 the couple decided to "amicably" split.

8. Courteney Cox and David Arquette

The Hollywood power couple called it quits in 2010, after 11 years of marriage and a daughter together. Cox reportedly told Arquette she was "tired of being your mother."

7. Pam Anderson and Tommy Lee

Motley Crue drummer Tommy Lee leads the rock star life, and we thought Pam Anderson was the perfect gal to live it with him. Their love of living fast, getting inked up and filming their sexual exploits proved not to be enough to keep this PDA-friendly couple together so they called it quits in 2002.

6. Susan Sarandon and Tim Robbins

Even though Susan Sarandon and Tim Robbins never officially married, they were together for 23 years and had two children together. Robbins, 51, and Sarandon, 63, met while filming Bull Durham and had a relationship that many envied -- until their shocking split in December of 2009.

Up next, the top 5 shocking celebrity breakups!