Celebrity Couples We Never Thought Would Break Up (PHOTOS)

Arnold Schwarzenegger and Maria Shriver's divorce announcement has come as total shock to many people in Hollywood and politics. After 25 years of a very public marriage, the former Governor of California and the beloved member of the infamous Kennedy family are calling it quits.

It's safe to say that you never know what goes on behind the scenes in many of these Hollywood romances. Some celebrity relationships are easy to predict, while others are not. The media likes to put a time limit on Hollywood relationships, but some couples prove the critics wrong and beat the test of time.

But it seems like even relationships that beat the test of time also come to an eventual end. GlobalGrind decided to round up all of the Hollywood couples who we never thought would break up.

From Rihanna and Chris Brown to Reese Witherspoon and Ryan Phillippe, we've got all the couples. Check it out on the next few pages!