The latest Jessica Simpson dating rumor is just plain kind of wacky. No, she's not back together with Tony Romo, John Mayer or even Nick Lachey. There's rumors floating around the internet that the pop star and Smashing Pumpkins frontman Billy Corgan are kind of into one another.
E! News reported that Jess is "smitten" with Billy, but that her friends think he's too old for her. (He's 42, she's 29.) "He's just another in an endless string of Jessica's boyfriends," a source told the website. "They think he's too old for her. No one takes any of her boyfriends seriously anymore because she has had so many. They're sick of all of them being 'the one.' "
Although reps have yet to confirm the pairing, we've found photos (like the one above) of the pair leaving a New York City hotel together. Billy's was walking a few steps behind her in the pic, but he is clearly apart of the entourage.
This latest starlet/rock star coupling, got us thinking about what other couples have us going, really? Check out our list after the jump!
Marilyn Manson and Evan Rachel Wood
They are so on-again, off-again it's hard to know when they really are on. But, recently Manson revealed they were giving it another shot. Sometimes the road to true love is rocky, and involves a little Britney Spears.
Mandy had always dated more "Hollywood types" (think: Wilmer Valderrama) before Ryan Adams came into the picture. And, well Ryan has always loved actresses (albeit more quirky ones like Winona Ryder and Parker Posey), but they found "the one" when they met each other. And, they even tied the knot to prove it. But, don't expect any musical collaboration anytime soon.
Emmy Rossum and Adam Duritz
Adam Duritz has wooed many a starlet in his day (Nicole Kidman and Courtney Cox, just to name a few), but these days he's fallin' in love with Emmy Rossum. She says they met on Twitter … perhaps that is the new match.com?
Kate Hudson and Chris Robinson
Like Mandy and Ryan, these two, for some time at least, lived in wedded bliss. They even had a son together. And for some seeing the scruffy rocker and the beach-blonde starlet happily married, left them confused, but they always seemed happy while it lasted, plus she says it was love at first sight. Aww!
Natalie Portman and Devendra Banhart
The ivy leaguer and the rocker made a run at romance for some time. She even starred in one of his music videos. Yet, that wasn't enough to keep the flame of love alive. But, no worries, he recently said the pair are still besties.
With the news of Jessica and Billy, what other couples have left you surprised?

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