Sarah Palin's Daughter Bristol is Engaged

Bristol Palin and Medal of Honor recipient Sgt. Dakota Meyer are engaged, a Palin family friend confirmed.

The daughter of former vice presidential candidate Sarah Palin posted a photo with her new fiance on Instagram, writing "Truly the luckiest girl in the world, cannot wait to marry this man!!!!"

Bristol, who was previously engaged to Levi Johnston--the father of her 6-year-old son Tripp--also posted a close-up shot of her new ring:

Meyer served as a Marine in Iraq and Afghanistan. In 2011, he was awarded the Medal of Honor, becoming the third living Medal of Honor recipient since the Vietnam War.

Meyer wrote on Facebook today, "Coming back from Afghanistan there were days I thought I may never be happy again, and I know there's a lot of you out there who know that feeling. We only have one life to live and we have to do our best to live it the right way, and Bristol makes me a better man. I can't wait to spend the rest of my life with her and Tripp."