David Fisher / Rex USA 1 / 7
David Fisher / Rex USA 1 / 7

Presley's princess has found her prince! Actress Riley Keough, Elvis Presley's granddaughter, is engaged to boyfriend Ben Smith-Petersen. Her stuntman beau announced the news via Facebook on Thursday, Aug. 14.

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"So that happened," Smith-Petersen captioned a picture of the two snuggling. Keough, 25, went without makeup for the intimate moment and showed off her gorgeous engagement ring.

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Lisa Marie Presley's daughter and Smith-Petersen first met while filming Mad Max: Fury Road in 2012.

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"They're very serious. They're perfect for each other. Great people," a source tells Us of the newly engaged couple. Another adds: "So happy for them. They joked about having a dog 'baby' together now and how it was just a matter of time until they made it official."

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Us broke news in March 2012 that Keough got engaged to her "Magic Mike" costar Alex Pettyfer. After a brief split, the pair were spotted holding hands at "The Butler" L.A. premiere last August. Keough -- who starred in "The Runaways" with Kristen Stewart and Justin Timberlake's "TKO music video last year -- was previously linked to Ryan Cabrera, and denied rumors she hooked up with Robert Pattinson in July 2013.