Beyoncé Knowles and Jay-Z (7/3)
RG: Keeping their relationship private is a sign that it's actually important to them. Her parents have been married 24 years, which is another good sign: she knows what it takes to see a relationship through good times and bad. Despite her youth and his bad-boy public image, they'll make it.
PP: They have a significant age difference, and she has not yet reached the average age of first marriage. The younger people are when they first get married, the more likely they are to end up in divorce. But these two have been dating for quite a while. You never know—they might make it.

Brad Pitt and Angelina Jolie (19/4)
RG: In all my years as a dating coach and matchmaker, I've never once seen the "other woman" end up happy in the relationship she's stolen. They won't last.
PP: They have middling chances of making it. She was married twice, he was also married, and they have high-powered careers that require extensive travel. On the plus side it seems like they are serious about a life-long commitment because they have adopted kids and a birth child.

Katie Holmes and Tom Cruise (30/1)
RG: She was starstruck: blinded by wealth, good looks, fame. It's easy to think that infatuation is love, but it doesn't last. Compatibility is about what happens when two people are alone. When the cameras stop rolling, my guess is that they have little in common. They won't last.
PP: They have poor chances of success. There is a huge age difference, a previous marriage, and stepchildren.

Johnny Depp and Vanessa Paradis (3/7)
RG: After eight years and two kids, he still refuses to seal the deal with marriage. Even though he clearly adores her, this guy is keeping his options open. She'd be wise to move on if she wants a formal commitment. They won't last.
PP: Even though they are not married, unmarried partnership with kids are more common in Europe, where they live. These two have high chances of success.