"Summer House" star Lindsay Hubbard is breaking her silence about the sudden, high-profile breakup with her co-star and fiancé Carl Radke, calling it "heartbreaking" and "not my decision."

Hubbard, 37, posted a lengthy Instagram statement on Wednesday calling Radke's August decision to end the engagement months before the wedding "the most heartbreaking and emotional weeks of my life."

"My entire life and future was ripped out from underneath me and I've had a hard time making sense of it all - with no answers or closure on why," Hubbard wrote. "I feel humiliated by how it went down, and simultaneously heartbroken that it happened in the first place. My trust has been betrayed."

Radke proposed to his Bravo TV co-star Hubbard in August 2022 at Southhampton's Dune Beach, a romantic event captured by Bravo cameras for the reality show's upcoming seventh season. The couple planned to wed in a lavish, November ceremony in Mexico — a wedding also destined to be broadcast on Bravo.

However, Radke sent out a Sept. 11 email informing wedding guests about the official wedding cancellation, according to People.com and Entertainment Tonight.

Fellow Bravo star "Below Deck" Captain Lee Robach, who was going to officiate the couple's wedding, said Radke was "as devastated as anyone I’ve ever seen" about the relational rupture. Robach discussed the emotional situation on his "Salty With Captain Lee" podcast.

While thanking her friends, family, co-stars and fans for support in the Instagram post, Hubbard wrote that she was "picking up the pieces of my heart and life every day from the fallout."

"I grieve the loss of not only my relationship, but my friendship with someone I considered my best friend for 8 years," she wrote.

USA TODAY has reached out to Bravo "Summer House" media representatives for comment.

Bravo's "Summer House" follows a group of friends who share a Hamptons, New York vacation home. Hubbard and Radke have been fixtures since the first season of the reality show aired in 2017.