A day after reports that the 24-year-old had proposed to his girlfriend at a restaurant in the Bahamas, he posted a photo of the two of them on Instagram.
In a long post, he described 21-year-old Baldwin as the “love of my life”.
He told his 100 million followers: “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.”
He added: “You make me so much better and we compliment each other so well!!
“Can’t wait for the best season of life yet!
Not sure what I did in life to deserve such happiness but I am so utterly grateful to God for giving me such an incredible person to share my life with! No words could ever express my gratitude. ❤️
— Hailey Baldwin (@haileybaldwin) July 9, 2018
“It’s funny because now with you everything seems to make sense!
“God’s timing really is literally perfect, we got engaged on the seventh day of the seventh month, the number seven is the number of spiritual perfection, it’s true GOOGLE IT!”
Baldwin wrote on Twitter: “Not sure what I did in life to deserve such happiness but I am so utterly grateful to God for giving me such an incredible person to share my life with!
“No words could ever express my gratitude.”
Bieber’s security team is believed to have told diners at the restaurant on Saturday to put their phones away before the singer popped the question.
Baldwin’s father – actor Stephen Baldwin – had appeared to confirm the news in a tweet, before quickly deleting it.