On-Again, Off-Again Couples In Hollywood

On-Again, Off-Again Couples gallery: Summer flings are in full swing in Hollywood, and once again Justin Bieber and Selena Gomez are reportedly giving it another go. The two were spotted together at mutual friend Alfredo Flores' birthday in Los Angeles on June 16. WATCH.

But these two certainly aren't the only exes to get back together. Here's seven celebrity couples that have been on-again, off-again, on-again so many times, it's hard to keep up!

Depending on which season and/or Kardashian reality show you watch, you can either find Scott Disick and Kourtney Kardashian going to blows, or announcing a pregnancy. This season, it's a pregnancy. Kourtney revealed on Keeping Up with the Kardashians that the couple is expecting their third child. 

These two just can't quit each other. Selena Gomez and Justin Bieber have been on and off again since 2010, and according to Us Weekly, they're currently on again. "Justin and Selena are definitely full-on back together at the moment," one source told the publication. "They spent all day riding together on a Can-Am Spyder on Sunset Blvd. … Justin drove while Selena sat on the back holding on to [him]."

The source added: "He was incredibly sweet with her and they looked super happy and in love." Will this rekindled romance stick this time?

Chelsea Handler and hotelier Andre Balazs have split several times but appeared to be back together as of Feb. 2013. Currently though, this funny girl is single.

After announcing their breakup in March 2011, Justin Timberlake and Jessica Biel were back at it in Oct. of that same year. The two married in 2012, and are still going strong.

After briefly dating in 2007, Friday Night Lights star Minka Kelly and Captain America actor Chris Evans gave their relationship another go in Oct. 2012. They've since broken up again, and Evans is rumored to be dating Sandra Bullock.

Evan Rachel Wood started dating Jamie Bell in 2005 after meeting him on set of Green Day's video Wake Me Up When September Ends, but the two parted ways and Wood went on to date Marilyn Manson. Then in 2011, the actress started dating Bell again, and the two were married and welcomed their first child. Then in May 2014, it was announced that the couple had decided to split after only two years of marriage. 

John Mayer and Katy Perry went public with their relationship in the summer of 2012 and were even rumored to be engaged for a time. The duo also collaborated on a love song titled Who You Love. Sadly, none of that stuck and the two called it quits, seemingly for good, earlier this year.