Justin Bieber and Hailey Baldwin celebrated the first-year anniversary of their engagement on Sunday. Two months after they got engaged, the couple surprised everyone when they suddenly tied the knot.

There were speculations suggesting that Bieber and Baldwin’s marriage wouldn’t last because they didn’t know each other that well. But one year has passed, and the couple has proven everyone wrong.

A source recently told People that the “Baby” singer doesn’t have any regrets about marrying Baldwin quickly because he was certain that she was the one. The source added that Bieber cannot imagine life without his wife.

“Their engagement happened so quickly after they got back together,” the source said. “It was very special for Justin to propose. He was so sure that Hailey was the one … He feels like he wouldn’t have made it through this year without [her],” the source added.

Baldwin has stood by Bieber’s side while he was struggling with his mental health. The singer previously admitted to suffering from depression, anxiety and attention-deficit/hyperactivity disorder. The supermodel also supported her husband’s decision after he announced that he would be taking some time off from making music so that he could focus on himself.

“Although Justin is still working on his mental health, he and Hailey are doing great,” the source said. “They still act like newlyweds. Justin constantly surprises Hailey with gifts. She is always gushing about what a great husband he is.”

Last month, Baldwin once again showed her support for Bieber. The pop star uploaded a photo of himself inside the studio, and Baldwin is hugging him from the back.

Bieber’s fans quickly speculated on the possibility that Bieber’s upcoming single will be an ode to his wife. In April, the singer penned a beautiful poem for Baldwin, and Bieber’s fans thought that the lines to the poem might be used on his new single.

Justin Bieber and Hailey Baldwin Justin Bieber and Hailey Baldwin attend the John Elliott front row during New York Fashion Week: The Shows on September 6, 2018, in New York City. Getty Images/Nicholas Hunt for NYFW: The Shows

While Bieber was still dating Selena Gomez, there were also rumors that the former has written songs about the latter. In 2013, he dropped “Bad Day” while struggling with their relationship. In the same year, he dropped “Heartbreaker” and revealed that he wrote it while he was dealing with his broken heart.