The Canadian actor died on 13 July 2013 from an alcohol and heroin overdose at the age of 31.
Monteith and Michele starred together as on-again-off-again lovers Rachel Berry and Finn Hudson on the hit musical series Glee. The two also began dating off-screen in 2012, up until his death.
On Instagram today (13 July), Michele posted a behind-the-scenes photo of the pair from an episode of the Fox show. Underneath, she included a red heart emoji.
The 35-year-old actor married Zandy Reich in 2019, and they welcomed their son, Ever Leo, in 2020.
Iqbal Theba, who played Principal Figgins on the show, also remembered Monteith in a tweet that read: “It's been nine years since that heartbreaking phone call from my publicist. He would've been 39 this year #CoryMonteith.”
A few days ago, other cast members paid tribute to Naya Rivera – who played Santana Lopez on Glee – two years after she drowned on 8 July 2020 at the age of 33.
“Everyday my angel. I miss you every damn day,” Heather Morris wrote in an Instagram post, alongside a photo of the two.
Kevin McHale posted a photo of Rivera on Instagram with the caption: “The best there ever was forever & ever.”
Jenna Ushkowitz also shared a picture of Rivera, including a single red heart emoji.
Meanwhile, Michele was recently confirmed to replace Beanie Feldstein as Fanny Brice in the Broadway revival of Funny Girl.