Val Chmerkovskiy's Congratulatory Note to Brother Maksim and Peta Murgatroyd Will Melt Your Heart

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Saturday was an exciting night for the Chmerkovskiys!

After Maksim Chmerkovskiy proposed to fellow Dancing With the Stars pro, Peta Murgatroyd, on stage at the Sway: A Dance Trilogy show in Miami, Florida, his brother, Val Chmerkovskiy, took to Instagram to officially approve of the engagement.

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In the adorably sweet post, Val penned a special message to his brother's fiancée as he welcomed her into his family.

"You have my brothers loyalty, heart, his one and only for the rest of his life," he wrote. "You're family now and that makes you my sister, the second most important woman in my life."

"What's mine is yours. Forever and always. Petachka your team got numbers now," he continued, adding the hashtags "#trapqueenforlife" and "#famovereverything."

WATCH: Rumer Willis Congratulates 'Wifey' Peta Murgatroyd on Engagement

Peta followed up Val's charming message with a post of her own on Sunday. Sharing a selfie with Nicole Volynets, Val and Maksim's sister, the 29-year-old dancer wrote, "This is one human being who has literally changed my life. To put it quite simply… @nicolevolynets I couldn't live without you, you're officially my sister."

It doesn't get much cuter than that!

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Following the exciting news, many DWTS pros and former contestants took to social media to congratulate the couple, including Val's season 20 dance partner, Rumer Willis. "My wifey is getting married!!! ?love you @petamurgatroyd, so happy for you," she wrote.

This is the first marriage for both Peta and Maksim, who have been dating on and off since 2012. Congrats to the happy couple!

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