Something to dance about! Dancing With the Stars pro Lindsay Arnold is engaged to her boyfriend Sam Cusick.

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"Just when I thought our day in Africa couldn't get any better…. We are engaged!!:):)" the 20-year-old captioned an Instagram photo of the two on Tuesday, Dec. 9. The soon-to-be spouses looked elated as Arnold showed off her gorgeous new ring. "ENGAGED," Cusick added on his own page.

Arnold's BFF, fellow DWTS star and this year's winner Witney Carson, shared her own excitement for the pair. "My best friend in the whole entire world got engaged to the love of her life today!" she captioned the Instagram pic. "I am crying tears of joy, I could not be happier!! I love you guys, congrats!!!"

Arnold was previously a contestant on So You Think You Can Dance in 2012 before joining ABC's DWTS in 2013. She was teamed up with boxer Victor Ortiz in season 16 and has been a member of the dance troupe for the last three seasons.

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