Justin Bieber and Hailey Baldwin first met backstage at the Today Show in 2009, when Hailey was just 12 and Justin was 15. At the time, Justin was in a well-known relationship with Selena Gomez, which lasted several years, on and off. During his periodic breaks with Selena, Justin spent much time with Hailey as they hung out with mutual friends. They grew together, briefly dated during one of his breakups with Selena, and when no one expected it, he shocked the world by announcing that he proposed to Hailey in July 2018.

"Was gonna wait a while to say anything but word travels fast. Listen plain and simple Hailey... I am soooo in love with everything about you! So committed to spending my life getting to know every single part of you loving you patiently and kindly. I promise to lead our family with honor and integrity letting Jesus through his Holy Spirit guide us in everything we do and every decision we make. My heart is COMPLETELY and FULLY YOURS and I will ALWAYS put you first! You are the love of my life Hailey Baldwin and I wouldn’t want to spend it with anybody else. You make me so much better and we complement each other so well!! Can’t wait for the best season of life yet!. It’s funny because now with you everything seems to make sense! The thing I am most excited about is that my little brother and sister get to see another healthy stable marriage and look for the same!!! God's timing really is literally perfect, we got engaged on the seventh day of the seventh month, and the number seven is the number of spiritual perfection, it’s true GOOGLE IT! Isn’t that nuts? By the way, I didn’t plan that, anyway My goodness does feel good to have our future secured! WE'RE GONNA BE BETTER AT 70 BABY HERE WE GO! “He who finds a wife finds a good thing and obtains FAVOR from the Lord!” This is the year of favor!!!!"
                                                           Justin Bieber via Instagram

In September 2018, Hailey’s uncle, Alec Baldwin, revealed to Access Hollywood on the Emmys red carpet that the young lovers had already married in a New York City Courthouse.

In September 2019, they had their official wedding in South Carolina, attended by stars like Kylie Jenner, Jaden Smith, and Justin’s mentor, Usher. According to People Magazine, the wedding had 154 guests.

In May 2024, Justin and Hailey revealed they were expecting their first child together.

In August 2024, the couple announced the arrival of their first baby boy, Jack Blues Bieber, with a picture of his foot.