Olivia Dunne, a member of the U.S. women's gymnastics team, shared a throwback photo with Simone Biles on Instagram.
The photo shows Dunne and Biles posing together in their gymnastics leotards.
Dunne captioned the photo with a heart emoji and the words, 'Miss you.'
Biles responded to the post with a heart emoji of her own.
Fans of the gymnasts flooded the comments section with messages of love and support.
Dunne and Biles have been friends and teammates for years.
Biles withdrew from the team competition at the Tokyo Olympics due to mental health concerns.
Dunne and the rest of the U.S. women's gymnastics team went on to win the silver medal in the team competition.