Why Nick Lachey and Jessica Simpson are still together? MONEY!

"Nick and Jessica are much more viable as a couple than they are as two individuals," a friend of the two tells Star.

"Their appeal is as a cutesy, cuddly duo. If they split, they will lose the fan base of those who fell in love with them as a happy, and oh-so-in-love newlywed couple."

While that may or may not be true, Joe Simpson, Jessica's father/ manager, isn't about to let Jessica's personal life get in the way of her career, another source says.

"Joe controls everything in that marriage, from where they perform together, to whether they appear publicly, or not.". . . . . .Full Story