Sure, some celebrity breakups result in the stars in question hooking up with new people - sometimes pretty much immediately, and sometimes after as long as a month. But there are some couples who can't live without each other.
Robert Pattinson and Kristen Stewart:
Twilight fans were shocked when pictures of Kristen in the arms of her Snow White and the Huntsman director Rupert Sanders were made public. They split up, and R-Patz moved out of their LA home, and Kirsten followed thereafter.
There was much speculation about how the pair would handle joint appearances for interviews, press conferences and premieres of The Twilight Saga: Breaking Dawn Part 2, but if news of their reunion is true, it seems that Twilight fans have gotten their happily ever after, after all.
Chris Brown and Rihanna:
Rihanna infamously went MIA at the 2009 Grammy Awards.
The reason: She was beaten black and blue by her then boyfriend, singer Chris Brown, the night before. There was much public outrage after pictures of Rihanna with a swollen eye, cut lip and bruised face did the rounds on the net.
The couple split, and Brown later pleaded guilty to the assault and was sentenced to one year's probation. In August this year, however, Rihanna admitted to Oprah that she missed Brown and that he was her "first love".
There is now much debate about whether the two are back together after they were seen kissing at the 2012 VMAs and after Brown got a new tattoo, which bears a strong resemblance to Rihanna.
Justin Tiberlake and Jessica Biel:
The former N' Sync singer and The A Team actress got together in 2007, but called things off in March 2011, reportedly because of reports that Justin was getting cozy with his Friends With Benefits co-star Mila Kunis. However, reports surfaced of them getting back together in August last year when they were spotted riding bikes together in Toronto.
And now that they've officially declared their engagement, everyone is speculating about when the wedding will be.
Miley Cyrus and Liam Hemsworth:
Miley and Liam hooked up after they met on the sets of the film The Last Song in 2009. However, in 2010, Miley was photographed getting cozy with a male co-star on the sets of LOL, while Liam was spotted playing the field. They got back together soon after, and are now engaged.