'Yes a million times over', said Jennifer when she got proposed. The 23-year-old Stanford graduate addressed the photo's caption to Nassar.

"You are one of a kind. Absolutely swept me off my feet this past weekend, surprising me in the most meaningful location over one of our many shared passions," she wrote with a ring emoji. "I can’t wait to spend the rest of our lives learning, growing, laughing and loving together. Yes a million times over. AHHH!!!"

Though it is unclear what "shared passions" she is referring to in the post, one thing the couple have in common is their love of equestrian sport. Jennifer is also an equestrian athlete and posts frequently about her competitions.

The couple have been together for years, with social media posts together dating back to 2017.

In a similar post to his Instagram, Nassar shared the happy news: "SHE SAID YES!!"

"I’m feeling like the luckiest (and happiest) man in the world right about now. Jenn, you are everything I could have possibly imagined..and so much more," he continued. "I can’t wait to keep growing together through this journey called life, and I simply can’t imagine mine without you anymore. Love you more than you can possibly imagine, and thank you for making every single day feel like a dream to me. Here’s to forever! 

Jennifer took to the comment section to share her emotion.

"Yep crying again it's fine life is perfect (right now) you're everything to me," she wrote with a heart and ring emoji.

Her mother, Melinda Gates, wrote, "So thrilled for you and @mayelnassar!"