Love is a fickle thing — especially for celebrities. Keeping up with their romantic mood swings can be a near-impossible feat, but fear not: Wonderwall.com is here to help! Keep reading to get the scoop on 15 off-and-on celebrity couples, starting with recently reunited duo Jennifer Lawrence and Chris Martin. The "Hunger Games" star and the Coldplay frontman were first spotted together in mid 2014 following Chris's "conscious uncoupling" from Gwyneth Paltrow. They reportedly called it quits in October but appeared to be an item during a late December sushi date in Los Angeles.
Jennifer Lopez and Casper Smart parted ways in June 2014 amid reports that the backup dancer cheated on his girlfriend of nearly three years by sexting two transgender models. Despite the scandal, the duo remained close and eventually rekindled their romance. They were spotted looking particularly cozy while ringing in 2015 together in Las Vegas.
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Katy Perry and John Mayer reunited at a mutual friend's dinner party in Los Angeles on Jan. 6, 2015. The pop star — who's been linked to DJ Diplo since April 2014 — and the "Gravity" singer first connected in summer 2012 and broke up several times before calling it quits for good in February 2014. Is another reconciliation on the horizon?
Good luck keeping up with Khloe Kardashian's off-and-on romance with French Montana! The duo were first linked in April 2014, briefly parted ways in September, reconnected in November and called it quits again in December.
Chris Brown and Karrueche Tran first stepped out together in 2011 — and it's been trouble ever since. In December 2014, the duo weathered a public breakup only to reconcile days later. They even rang in 2015 by sparking engagement rumors. We guess Karrueche is finally over her boyfriend's off-and-on dalliance with Rihanna!
Prince Harry first stepped out with Cressida Bonas in July 2012. Their relationship has been rocky ever since. The duo took a break in August 2012, reconnected in early 2013 and broke up again in April 2014 only to reunite a few months later. Will the third time prove to be the charm?
Rihanna and Drake were first spotted smooching in 2009. The duo reportedly reconnected in July 2011, hooked up briefly in 2012, rekindled their flame in August 2013 and hung out again in February 2014. Rihanna and Drake have yet to reconcile following their May 2014 split.
Pamela Anderson and Rick Salomon — who tied the knot in October 2007 but separated two months later — reunited in August 2013. They secretly tied the knot for a second time in late 2014, but by July, the former "Baywatch" beauty had filed for divorce. Apparently Pam had a change of heart: She and Rick were spotted together again a couple weeks later.
Audrina Patridge and Corey Bohan are apparently back on. The "Hills" alum and the Australian BMX racer rang in 2015 together after briefly parting ways in July 2014. It wasn't the first time the duo temporarily called it quits: They also broke up once in October 2009 and again in March 2011.
Kourtney Kardashian and Scott Disick have weathered countless breakups since they first got together in 2007. They briefly parted ways in 2009 but reconnected before the birth of their first child, son Mason, in December 2009. The reality-TV stars have been off and on ever since. They faced the latest round of breakup rumors in December 2014, the same month they welcomed their third child.
Sammi "Sweetheart" Giancola and Ronnie Ortiz-Magro have been off and on since they first joined the cast of "Jersey Shore" in 2009. The reality-TV duo have broken up so many times, we hardly batted an eye when they called it quits again in mid 2014.
Jude Law and Sienna Miller first connected while shooting their film "Alfie" in 2003. They became engaged the following Christmas but never made it to the altar: The British actor got caught cheating with his children's nanny in July 2005. He and Sienna tried to make it work off-and-on for the next year before officially calling it quits in November 2006. The duo were spotted together again in late 2009, but by February 2011, they were through.
Denise Richards and Richie Sambora quietly reconciled in November 2011 — four years after they first parted ways. The comely couple briefly split again in January 2012 but reconnected in time to make their public debut that May. Sadly, the duo called it quits for good the very next month.