By Meghan Overdeep
Updated Jul 14, 2016 @ 7:45 am
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BEVERLY HILLS, CA - FEBRUARY 27: Actor Cory Monteith and actress Lea Michele attend the PaleyFest Icon Award presentation at The Paley Center for Media on February 27, 2013 in Beverly Hills, California. (Photo by Jason LaVeris/FilmMagic)
Credit: Jason LaVeris/FilmMagic

Wednesday marked the three-year anniversary of beloved Glee star Cory Monteith's death. His co-star and girlfriend at the time, Lea Michele, took to social media to celebrate his life and grieve his untimely passing.

"We may not have gotten to share a lifetime together... But the memories... they're the best of my life," Michele, 29, captioned an Instagram photo of Monteith walking along a rocky shoreline towards the ocean. "Love you, Cory," she added with a heart emoji.

Michele shared the same image on Twitter, alongside a different message to her departed love. "I know every day you're watching over me, and smiling," she wrote. "Love and miss you Cory, every day, but today a little more..."

Other Glee cast members also shared heartfelt messages to Monteith on social media.

"The minutes become days, and the days become years...but you always remain so close. I miss you, Brother," Matthew Morrison tweeted with photo of himself and Monteith on set.

"One of the sweetest, most generous humans I've ever met," Dianna Agron captioned a photo on Instagram of herself touching Monteith's nose. "You made me laugh harder than anyone and there was never a moment you weren't doing something to put a smile on our faces. I miss you."

"Today I woke up thinking abt ur smile & how infectious it was. U made us laugh & feel loved evryday. #3YearsWithoutCory" Kevin McHale wrote on Twitter alongside a gif of himself and Monteith goofing around in a photobooth.