Wells, 35, also shared a video of his romantic beachside proposal along with a photo of them toasting to their new chapter.
"I’ll be Johnny, you be June. But forever," Wells captioned the sweet clip. "🎶- Drew Holcomb & The Neighbors."
Sarah and the Bachelorette alum first sparked dating rumours in 2016 after flirting on Twitter, however didn't get together until halfway through 2017. Just before Christmas two years ago, Sarah and Wells took the next step in their relationship and moved in together.
“I don’t think it’s been long enough to discover pet peeves with each other,” she told PEOPLE, revealing the big change "brought us closer". “I think we’re in the honeymoon phase of living together. It’s good that nothing is already starting, because then I think that would be a bad sign.”
Earlier this year, the Modern Family actress— who played Haley Dunphy in the popular sitcom— opened up about her health struggles and how her second kidney transplant overlapped with the beginning of her romance with wells. Although they had only known each other for three days, Sarah said her transplant brought them closer together.
"It was a really intimate start to a relationship to have to go through those hurdles at the very, very, very beginning when you're just even getting to know a person," the 28-year-old said. "Also, falling in love with someone before you can really be intimate. I did not believe that that was a thing, but it is."
She added: "He's seen me at my worst. I think that's why I feel the most beautiful in his eyes, because he still finds me beautiful after seeing all that."
Sarah previously dated Shadowhunters actor Dominic Sherwood.