Success. Having starred in the big budget blockbuster Transformers, Megan Fox is at a point in her career right now when she could command seven figures for a big film (from $1-1.5 million). As for Brian Austin Green, he's more of a television man, known for his role in Terminator: the Sarah Connor Chronicles. And he's probably not raking in the millions.
Attractiveness. Fox has secured her spot in history as the next Angelina Jolie, thanks to her sultry eyes and unbelievable figure. The ladies loved Green back in his Beverly Hills, 90210 heyday, but the general consensus is that Megan way outshines him now.
Popularity. To be frank: Few people are going crazy over Brian, but they (especially men) can't get enough of Megan. In March, around 2.75 million Internet users searched Google to learn more about Megan, but only 90,000 seached for Brian. In any case, those numbers puts these two in the top third on our list of most popular couples.
Staying Power. Megan and Brian have been dating since 2004. They've already endured a broken engagement, even though they're still together, but Fox has said she's "not the marrying type" (more below). And since Brian is Megan's first Hollywood romance, there's reason to believe there will be more in her future -- but don't expect her to go for Zac Efron. For his part, Green has dated costars Tiffani Theissen and Vanessa Marcil, with whom he has a son.
Compatibility. Megan's Taurus sign is a good match for Brian's Cancer one, because they both value luxury and security. Still, Brian may need to be coddled more than straightforward Megan can offer. As her fame grows, his ego will probably suffer.