Bieber, 24, reportedly asked Baldwin, 21, to be his wife on Saturday night while they were on vacation in the Bahamas.
The couple, who originally dated in 2016, have only been back together for a few weeks. However, a source told PEOPLE that the proposal wasn’t entirely surprising.
“It’s kind of a surprise, but kind of not. Justin has been extremely happy these past few weeks,” a source told PEOPLE. “He has known Hailey for a long time. This might seem sudden, but they know each other very well.”
The couple hasn’t commented on their engagement, but Baldwin does appear to be wearing a diamond engagement ring. Pictures from their vacation in the Bahamas show her wearing a large sparkler. Besides that but both of their families have posted now-deleted congratulations online.
Hailey’s father, Stephen Baldwin posted on Instagram to congratulate the happy couple.
He also congratulated his daughter’s future in-laws before adding “#PraiseJesus.”
The serious Christian concluded his tweet by including a Bible verse. He quoted Ephesians on the importance of husbands loving their wives.
“Husbands, love your wives, just as Christ loved the church and gave himself up for her to make her holy, cleansing her by the washing with water through the word, and to present her to himself as a radiant church, without stain or wrinkle or any other blemish, but holy and blameless.”
Baldwin’s dad wasn’t the only one to comment on the news. His parents also posted on social media.
Bieber’s father wrote, “@justinbieber Proud is an understatement! Excited for the next chapter!”