Can you even beliebe it? Justin Bieber is ready for marriage. 

Hours ago, the pop star shocked fans when sources revealed that he had proposed to Hailey Bieber. One insider described Bieber's decision to pop the question as "sudden," but explained that he "always knew Hailey and him had a special bond that was incomparable."

Becoming a worldwide phenomenon at the age of 16 has its obvious downsides, like having almost every one of your relationships play out in the public eye. Selena GomezSofia Richie and even Miranda Kerr are a few of the many celebrities who make up a chapter in Bieber's romantic history book. 

Now that he's no longer young Hollywood's most eligible bachelor, we thought it only right to raise a glass to every ex-girlfriend, one-time date and rumored boo linked to the Biebs. 

Hailey, it's your time to shine now. 

Justin Bieber, Hailey Baldwin

Elder Ordonez / SplashNews.com

Justin Bieber, Selena Gomez

Kevin Mazur/WireImage.com

Justin Bieber, Baskin Champion

REX/Shutterstock; Vasquez-Max Lopes / BACKGRID

Justin Bieber, Paola Paulin

BACKGRID

Justin Bieber, Sofia Richie

Jun Sato/GC Images

Justin Bieber, Nicola Peltz

AKM-GSI

Justin Bieber, Sahara Ray

Imeh Akpanudosen/Maury Phillips/Getty Images

Kendall Jenner, Justin Bieber

Xaume Olleros/Getty Images

Justin Bieber, Kourtney Kardashian, Halloween 2015

Instagram

Chantel Jeffries, Justin Bieber, Instagram

Instagram

Justin Bieber, Adriana Lima

Instagram

Justin Bieber, Miranda Kerr

CBS

And of course, congratulations to the happy couple! 

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