John Luke Robertson Engaged: 'Duck Dynasty' Star Is 'So Excited To Marry My Best Friend' [VIDEO]

John Luke Robertson is engaged.

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On his 19th birthday, the Duck Dynasty star, and oldest son of Willie and Korie Robertson, proposed to girlfriend Mary Kate McEacharn.

"I am so excited to marry my best friend. I know my parents married young as well, and they have always been examples of what 'could be' to me. Fast-forward 22 years and they are more in love than ever, and I hope Mary Kate and I are the same way in the years to come. God has truly blessed us," Robertson told Us Weekly on Oct. 12.

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Following his and Mary-Kate's engagement, John Luke confirmed their news, via social media, sharing a few cute pictures to Instagram. In one photo, Mary Kate showed off her diamond ring, while John Luke held a sign pointing at her, which read, "Future Mrs. Robertson."

Rebecca, the family's eldest daughter, also posted a pic with the couple. "She said YES @missmarymcmcmc so excited to be your sister," the caption read.

Even John Luke's younger sister, Sadie Robertson, took a break from Dancing With The Stars to return home and celebrate her brother's birthday. What she wasn't expecting when she arrived was his proposal to Mary.

John Luke is seen regularly on his family's reality show Duck Dynasty, and in addition to his wedding, has a few projects in the works. His latest endeavor is a new juvenile fiction book titled Willie's Redneck Time Machine Be Your Own Duck Commander.

Congratulations to the newly engaged couple!