The pair basically went from engaged, to married at the courthouse in a matter of weeks... but now, we're finally getting some inside info.
Hailey has just done her very first 73 Questions with Vogue, to accompany her cover shoot with JB. In it, she reveals how Justin proposed to her.
"We were on a trip to the Bahamas and we were alone in a house just the two of us," Hailey explained, showing off the ring. "It was very special."
Hailey also revealed that Justin asked Hailey's dad for permission before asking for her hand in marriage.
We love tradition.
Watch below... Justin Bieber and Hailey Baldwin Reveal They Remained Celibate Until Marriage in 'Vogue' Interview: