"I'll be Johnny, you be June. But forever," Adams captioned the sweet clip. "🎶- Drew Holcomb & The Neighbors."
The video shows the Bachelor in Paradise star getting down on one knee and proposing to Hyland on their tropical vacation. Adorable photos of the pair throughout the years are interspliced in the clip, which ends with snaps of them showing off Hyland's gorgeous ring.
Rumors circulated earlier this month that Adams had proposed to Hyland after fans spotted the actress wearing what appeared to be an engagement ring on her Instagram Story, though the couple didn't comment on the reports.
Adams and Hyland met for the first time in 2017 just three days before Hyland underwent her second kidney transplant. The operation meant the beginning of their relationship was wrapped up in Hyland's health concerns, but as Adams told ET in January, loving Hyland through it all was never even a question.
"It's not hard to love her. She's gorgeous and beautiful and smart and talented... With her health issues and stuff, everyone goes through things in their lives, it just so happened that when we started dating she was going through a very big thing," he said. "But as our lives unfold together, there's going to be things that happen to me when I'm going to lean on her. Every relationship's a give and take."
"It was nice that I was able to help her with her issue, but there will be times when I need her help," he added.