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Fans are always trying to keep tabs on their favorite celebrity couples -- but sometimes, even the couples themselves don't know what's going on! Selena Gomez and Justin Bieber are either back together, or having the friendliest break-up ever. Kristin Stewart and Robert Pattinson appear to have flamed out, but may just be in a holding pattern. And Chris Brown and Rihanna -- well, they're the only two people who understood what was going on in the first place. This weekend, all three couples saw new developments in their long-term, on-and-off relationships. Read on to find out who's running hot, who's gone cold, and who's getting naked Twitter pictures from their ex. Plus: our predictions for how long each break-up or reunion will last.
Kristen Stewart & Robert Pattinson
Update: It's off!
Skeptics have always wondered if Robsten could outlast the Twilight saga. Sure enough, two months after Breaking Dawn -- Part 2 hit Blu-ray, the co-stars have reportedly called it quits. "They again went from spending every second together to spending more time apart at their separate houses," a source told People this weekend. "Kristen has been in a terrible mood, and it was obvious that things were not great with Rob." The split comes as a surprise, since Rob and Kristen were strong enough to survive last summer's cheating scandal -- and were photographed holding hands at Coachella just two weeks ago.
How long until it's on again? Probably a matter of weeks. The media is being very cautious about reporting the break-up, with headlines like "Kristen Stewart, Robert Pattinson Split For Now." Also, they're still living together
Selena Gomez & Justin Bieber
Update: It's on!
Earlier this year, it really seemed like Selena and Justin were done for good. But they've had a tough time staying away from each other. In February, Selena was photographed leaving Justin's house; in April, she flew out to visit him on tour in Norway. And while she's been telling the press that she's single, the "Come and Get It" singer was pretty affectionate with Justin at Sunday's Billboard Music Awards. They were caught on camera and everything!
How long until it's off again? No more than a few months. These two are so young, and from everything Selena has said, she's trying to move on. She's just not doing a very good job.
Update: It's off!
They reportedly broke up in early April, then were spotted on a date three days later. While the rest of us were recovering from whiplash, Chris and Rihanna have rebounded with their respective exes; Ri-Ri has been partying with Knicks player J.R. Smith, and Brown has been hanging out with model Karrueche Tran. On Friday, Tran celebrated her 25th birthday by posting a raunchy Instagram photo of herself rubbing her bare butt on Chris's head. ""Happy bday @karrueche," Brown tweeted in response, to which Tran replied with a heart, to which we replied by throwing up.
How long until it's on again? "Never" is what we'd like to say, but Chris and Rihanna seem incapable of leaving their dysfunctional relationship behind. Just a few months ago, the "Diamonds" singer was telling Elle UK that she wants to have Brown's baby. We're hoping they're done this time, but you won't see us betting on it.