Tennis United took on a new meaning Thursday. ATP player Bjorn Fratangelo and WTA player Madison Keys, longtime partners, announced their engagement on social media.

“Forever 🤍,” they wrote on Instagram with a picture of their hands, a ring on Keys’ ring finger.

Their friends quickly congratulated the Americans on their special moment.

“Yesssssssssssss!!!!!!!!!!!!!!!!!” Sloane Stephens wrote. “We are getting married!!!!!!!!!!! 💍💍💍💍💍💍”

“That ring is tuuuuffff,” Frances Tiafoe added.

Robert Lindstedt, the former doubles star who coached American Denis Kudla until earlier this year, spent time with Team United States during the United Cup. The Swede commented: “@bjornfrat the overachiever!! Congratulations to both of you but mostly to him. ❤️💘❤️”

Two years ago, Fratangelo and Keys joined forces by playing mixed doubles together for the first time at the US Open.

“He finally wore me down,” Keys said, cracking a laugh. “I was always just saying I was going to be so nervous and I was going to have to try so hard, but he finally said, ‘We’ll just have some fun.’ I’m very happy that we did it.”

They were so happy, they did so again at the 2022 US Open, reaching the second round.