It’s no secret that in the world of the rich and famous, celebs often cross each other’s paths, have a turbulent relationship with one another, and break up after a couple of years of dating. And while some of those relationships end up forgotten, others stay with the celebrities and their fans for the rest of their lives.

Related: What Was Taylor Swift And John Mayer’s Relationships Really Like?

One of those relationships is the one between Katy Perry and John Mayer because it was not only a significant experience for the two stars — but it also resulted in plenty of incredible music that was written when they were together as well as after their breakup.

10 They Bonded Over Their Love For Music — And Even Created Some Together

Kicking the list off is the fact that both John Mayer and Katy Perry are musicians and they inevitably bonded over their love for music.

The couple even released a song together in August 2013 titled "Who You Love" and it was certainly evident that they enjoyed creating music with each other, something that fans were thrilled about. Besides collaborating, it was also no secret that they were each other's biggest muses at the time — and perhaps even for some time after their relationship ended.

9 John Used To Call Katy "Prism"

Next on the list is the fact that John Mayer actually used to call Katy Perry "Prism", and that certainly stuck with the artist. As fans already know, Katy released an album named Prism in 2013, and John even co-wrote a couple of songs on it.

Besides that, there are plenty of songs on the album that fans have suspected to be about John Mayer — “Legendary Lovers”, “Walking On Air”, and “Double Rainbow” being only some of them!

8 They Kept Breaking Up Then Getting Back Together

Throughout their relationship, Katy Perry and John Mayer have certainly had their ups and downs and it was often reported that the couple is no longer dating. However, the two have mostly managed to find their way back and it seems as if the constant breakups were just part of their relationship dynamics.

Related: Not-So-Known Facts About Katy Perry And Rihanna’s On And Off Friendship

Of course, in February 2014, the two actually broke up for good, but then again — in the world of the rich and famous you never know when someone's going to get back together!

7 John Didn't Feel Like A Celebrity In The Relationship

While both Katy Perry and John Mayer were quite successful musicians at the time — there is no doubt that Katy Perry was a slightly more well-known international popstar. In an interview for CBS News in 2013, John shared that for the first time in his life he didn't feel like he is the celebrity in the relationship because he’s not as high profile it’s Katy.

Of course, John has previously dated Taylor Swift but at the time she wasn't at the peak of her fame.

6 They Loved Travelling Together

While the two were in an on-and-off-again relationship only for a couple of years they still managed to travel to quite a few places together.

Above is a photo of the two having a blast in Hawaii — one of their favorite vacation destinations where they have been spotted multiple times. Judging from the photo above, the two loved goofing around together and John was always the designated photographer! And while Katy may have replaced John with Orlando Bloom, she still absolutely loves visiting Hawaii.

5 And Katy Admitted That John Was Great In Bed

Anyone who is up-to-date with pop culture certainly remembers the moment when The Late, Late Show host James Corden convinced Katy Perry to rank three of her celebrity exes in bed during the Spill Your Guts Or Fill Your Guts game and to everyone's surprise — she actually did it!

To be fair, it was either that or she had to eat a rotten, fermented egg, so the popstar simply admitted that John Mayer definitely earned the top spot and her current fiancée, Hollywood star Orlando Bloom only came in second.

4 There Were Engagement Rumors Multiple Times

During their on-and-off-again relationship, there were plenty of engagement rumors — mainly because Katy Perry was often spotted flaunting different gorgeous rings on that finger.

And while neither of them have ever confirmed any engagement, in fact, they always denied it — fans were always reluctant to believe that the two weren’t ready for a commitment at some point in their relationship, especially after hearing all the songs they wrote about their feelings for each other.

3 But Katy And John Kept Most Things Private

While Katy Perry and John Mayer occasionally attended events in the industry together, most of the time the two chose to keep their relationship very private. To their fans, the biggest insight into those two years of them being a couple was through the music they wrote at the time — as well as after their split.

Related: Here’s What Katy Perry Looks Like With No Makeup

The music is what made everyone realize just how much they cared about each other, which makes their final breakup even harder to accept!

2 Both Stars Weren't In A Good Place With Taylor Swift At The Time

Another thing that the two musicians had in common was that neither one of them was in a good place with popstar Taylor Swift at the time. For those who don’t know, John Mayer actually dated Taylor Swift from December 2009 to March 2010, while Taylor Swift and Katy Perry had a popstar rivalry going on for quite a couple of years.

Of course, since then things have calmed down between these celebs, but being in a bad place with T-Swift certainly made John and Katy bond even more.

1 Lastly, After Almost Two Years Of Ups And Downs, The Two Had Their Last Breakup

Wrapping the list up is the fact that after almost two years of being in a turbulent relationship, Katy Perry and John Mayer decided to call it quits one last time in 2014.

Katy has since then moved on to quick flings with rapper Riff Raff, as well as DJ Diplo and she is currently expecting her first child with Hollywood star Orlando Bloom — while John Mayer hasn’t really had a prominent significant other ever since and he certainly took a long break from dating after his breakup with Katy.

Next: 18 Celebs John Mayer Is Surprisingly Friends With