Fifteen years ago, Justin Bieber captured the hearts of teenage girls worldwide with his debut song, “One Time.” At the age of 15, Justin made his music industry debut, and now, as he turns 30 on March 1, he celebrates not only 15 years of fame but also the exciting news that he and his wife, Hailey Bieber, are expecting their first child together.


“One Time” was the first single from Justin’s debut EP, My World, marking the beginning of what became known as “Bieber Fever.” The song opens with the catchy line, “Ay ay ay ay ay ay ay, let’s go / Me plus you I’mma tell you one time.” The first verse continues, “When I met you girl my heart went knock knock / Now them butterflies in my stomach won’t stop stop / Even though it’s a struggle love is all we got / So we gon’ keep keep climbing ’til the mountain top.”


Fans will always remember the pre-chorus: “Your world is my world / And my fight is your fight / My breath is your breath / When you’re hurt.” The chorus, too, is unforgettable: “Cause girl you’re my one love / My one heart, my one life for sure / Let me tell you one time, girl I love, girl I love you / I’mma tell you one time, girl I love, girl I love you / And I’mma be your number one guy / You’ll be my number one girl, always making time for you / I’mma tell you one time, girl I love, girl I love you.”


The music video for “One Time” has amassed 774 million views on YouTube with 4.2 million likes. It features Justin and his best friend Ryan Butler playing video games on the couch before Usher, who mentored Justin from the beginning, asks him to house sit. Justin then texts a bunch of friends, leading to an all-night party. The video also shows Justin eyeing a girl, Kristen Rodeheaver.

Fans have flooded the comments section, reminiscing about Justin’s success, especially in light of his baby news. One fan wrote, “And just like that, this is now 15 years ago.. and he’s married and now expecting a mini Bieber.” Another commented, “Can’t believe he is going to be a dad, it feels like yesterday when this video came out. I really miss the Bieber fever era from 2009-2012.” A third person added, “This song would be the beginning of one of the best singers EVER.”