Kristen Stewart, Robert Pattinson, and 4 More Questionable Couplings

Oct. 3, 2012 — -- intro: Add Kristen Stewart and Robert Pattinson's reconciliation to the list of Things That Make You Go "Hmm."

The couple that crumbled in the wake of Stewart's transgressions with her "Snow White and the Huntsman" director have reportedly rekindled their relationship, just in time to hit red carpets around the world to promote the final installment in the "Twilight" saga, "Breaking Dawn -- Part 2," out next month. Last week, Stephen Colbert tweeted his analysis of the news: "Robert Pattinson and Kristen Stewart are back together! Wow, and so close to the release date of their new movie. That's lucky!"

Indeed. The history of Hollywood hookups is rife with examples of people who came together -- or at least let relationship rumors linger -- at convenient times in their careers:

quicklist: 1title: Taylor Swift and Jake Gyllenhaaltext: 'Twas a love story that was, perhaps, pure fiction. Swiftenhaal came to be when she had an album to hawk ("Speak Now") and he had a movie to promote ("Love and Other Drugs"). But in January 2011, the two ended their weeks-long "relationship" -- in quotes because their romance appeared to consist of little more than meet-ups over coffee, and neither of their reps ever confirmed the two were actually dating. media: 17378078

quicklist: 2title: Jennifer Aniston and Gerard Butlertext: A brush of the bottom was all it took for gossip-mongers to put Jennifer Aniston and Gerard Butler together. In 2010, while the two were promoting "The Bounty Hunter," Butler put his hand on Aniston's rear end while posing for photographs in Paris. It didn't help that Aniston had previously gushed about Butler being "the best!" Within hours, anonymous sources opened up about the two "hugging and touching each other" on a cruise around the City of Light. media: 17378032

quicklist: 3title: Jessica Simpson and Billy Corgantext: In December 2009, just before she and her father began a press push for her VH1 series, "The Price of Beauty," Jessica Simpson was linked to an unlikely paramour -- Smashing Pumpkins frontman Billy Corgan. She's blond, he's bald. She's country poppy, he's dark alt-rock.

Over the course of a month, Simpson tweeted about a potential collaboration with Corgan and gushed about how she admired his "enlightening outlook on faith." They were photographed together, and sources spoke anonymously about them "getting to know each other." Then, as fast as Simporgan swept into the public conciousness, the "couple" fizzled. media: 17377985

quicklist: 4title: Heidi Montag and Spencer Pratttext: It's not unreasonable to think that Heidi Montag and Spencer Pratt (of MTV's "The Hills") signed a pact in 2006 to embark on a relationship for the sole purpose of seeing how long the media would watch them. Through their wedding, her plastic surgery, their separation and their reconciliation, we did. And look how far it's gotten them: Montag's hosting the third anniversary party of a Las Vegas strip club later this month. media: 17378018