Sylvester Stallone’s younger brother Frank is showing support for the actor following news of wifeJennifer Flavin filing for divorceafter 25 years of marriage.In anInstagrampost Wednesday, the actor/musician, 72, posted a throwback photo of himself and theRockyactor, 76, when they were children. “Brothers till the end! Enough said,” Frank wrote in the caption, adding the hashtags, “#brotherhood #loyalty #trust #family #god #country.“Back on July 30, Frankposteda family photo of himself with Stallone, Flavin and their three daughters, Scarlet, 20, Sistine, 24, and Sophia, 25. “I had the best birthday ever with my family,” he wrote in the caption.On Friday, Flavin, 54, filed a petition “for dissolution of marriage and other relief” from Sylvester at a court in Palm Beach County, Florida.Flavin, a businesswoman and former model, exclusively told PEOPLE in a statement: “I’msad to announce that after 25 years of marriageI have filed for divorce from my husband Sylvester Stallone. While we will no longer be married, I will always cherish the more than 30-year relationship that we shared, and I know we are both committed to our beautiful daughters. I ask for privacy for our family as we amicably move forward.“For more on Sylvester Stallone and Jennifer Flavin’s split, listen below to our daily podcast PEOPLE Every Day.Stallone said in his own statement, “I love my family. We are amicably and privately addressing these personal issues.“Never miss a story — sign up forPEOPLE’s free weekly newsletterto get the biggest news of the week delivered to your inbox every Friday.Stallone and Flavin wed in 1997after first meetingin 1988 at a restaurant in Beverly Hills, California. Theyshare three daughters: Scarlet, Sistine and Sophia. He is also a dad to son Seargeoh from his previous marriage to Sasha Czack. His oldest sonSage, whom he shares with Czack,died in 2012.Sylvester Stallone and Frank Stallone in 2014.Jon Kopaloff/FilmMagicThree months before the filing, the paircelebrated 25 years of marriagewith loving posts on Instagram in May.“Happy 25th anniversary to my amazing wife,” Stallonewrotein a caption at the time. “There is not enough words to describe what this incredibly selfless dedicated, patient, woman has meant to our lives and I only wish they could be another 25! Thank you sweetheart!“Flavin then commented, “Thank you my love! I love you so much and we will be spending the next 25+ years together! Keep me laughing and I’m yours for the rest of my life!“Frank Stallone/InstagramShe added in her own now-deleted post: “Happy 25th wedding anniversary to us! Thank you for always keeping me laughing, loving and protecting our beautiful family! Ourmarriage keeps getting better every year! I can’t wait to spend the rest of our lives together!“Alongside a photo of herself hugging her three daughters, Flavinwroteon Instagram Aug. 10, “These girls are my priority. Nothing else matters. The 4 of us forever #truth #family #forever.” In the comment section, Sistine called her mom the “strongest woman I know,” and Sophia wrote, “You are our rock, cheerleader, and most incredible mom. We are so lucky to have you. Love you so much.”

Sylvester Stallone’s younger brother Frank is showing support for the actor following news of wifeJennifer Flavin filing for divorceafter 25 years of marriage.

In anInstagrampost Wednesday, the actor/musician, 72, posted a throwback photo of himself and theRockyactor, 76, when they were children. “Brothers till the end! Enough said,” Frank wrote in the caption, adding the hashtags, “#brotherhood #loyalty #trust #family #god #country.”

Back on July 30, Frankposteda family photo of himself with Stallone, Flavin and their three daughters, Scarlet, 20, Sistine, 24, and Sophia, 25. “I had the best birthday ever with my family,” he wrote in the caption.

On Friday, Flavin, 54, filed a petition “for dissolution of marriage and other relief” from Sylvester at a court in Palm Beach County, Florida.

Flavin, a businesswoman and former model, exclusively told PEOPLE in a statement: “I’msad to announce that after 25 years of marriageI have filed for divorce from my husband Sylvester Stallone. While we will no longer be married, I will always cherish the more than 30-year relationship that we shared, and I know we are both committed to our beautiful daughters. I ask for privacy for our family as we amicably move forward.”

For more on Sylvester Stallone and Jennifer Flavin’s split, listen below to our daily podcast PEOPLE Every Day.

Stallone said in his own statement, “I love my family. We are amicably and privately addressing these personal issues.”

Never miss a story — sign up forPEOPLE’s free weekly newsletterto get the biggest news of the week delivered to your inbox every Friday.

Stallone and Flavin wed in 1997after first meetingin 1988 at a restaurant in Beverly Hills, California. Theyshare three daughters: Scarlet, Sistine and Sophia. He is also a dad to son Seargeoh from his previous marriage to Sasha Czack. His oldest sonSage, whom he shares with Czack,died in 2012.

Sylvester Stallone and Frank Stallone in 2014.Jon Kopaloff/FilmMagic

Actor Sylvester Stallone and brother actor Frank Stallone arrive at the Los Angeles Premiere “The Expendables 3” at TCL Chinese Theatre on August 11, 2014 in Hollywood, California.

Three months before the filing, the paircelebrated 25 years of marriagewith loving posts on Instagram in May.

“Happy 25th anniversary to my amazing wife,” Stallonewrotein a caption at the time. “There is not enough words to describe what this incredibly selfless dedicated, patient, woman has meant to our lives and I only wish they could be another 25! Thank you sweetheart!”

Flavin then commented, “Thank you my love! I love you so much and we will be spending the next 25+ years together! Keep me laughing and I’m yours for the rest of my life!”

Frank Stallone/Instagram

Sylvester Stallone’s Younger Brother Frank Shows Support amid Divorce News: ‘Brothers Till the End’

She added in her own now-deleted post: “Happy 25th wedding anniversary to us! Thank you for always keeping me laughing, loving and protecting our beautiful family! Ourmarriage keeps getting better every year! I can’t wait to spend the rest of our lives together!”

Alongside a photo of herself hugging her three daughters, Flavinwroteon Instagram Aug. 10, “These girls are my priority. Nothing else matters. The 4 of us forever #truth #family #forever.” In the comment section, Sistine called her mom the “strongest woman I know,” and Sophia wrote, “You are our rock, cheerleader, and most incredible mom. We are so lucky to have you. Love you so much.”

source: people.com