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The late Cory Monteith will always have a piece of Lea Michele's heart.

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The actress took to Twitter on May 11 to wish her late on- and off-screen boyfriend happy birthday in a sweet message. Cory, who died of a drug overdose in July 203, would have been 33.

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"I know you're serenading everyone right now," Michele captioned a photo of her former "Glee" costar playing the drums and smiling. "We love you Cory! Happy Birthday.." She ended the caption with an emoji of a heart.

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Michele has since moved on following Cory's death. She now dates model Matthew Paetz.

Cory Monteith -- Gone, but certainly not forgotten.