Lea Michele remembers Cory Monteith on his birthday

LOS ANGELES, May 11 (UPI) -- Lea Michele took to Twitter on Sunday to pay tribute to her late boyfriend, Cory Monteith, who died of a heroin and alcohol overdose in July 2013.

Monteith would have turned 32 on Sunday.

"The biggest heart and most beautiful smile," Michele wrote. "In all of our hearts.. We love you so. Happy Birthday."

She also shared a sweet photo of herself laughing with the late Glee star.

The biggest heart and most beautiful smile.. In all of our hearts.. We love you so. Happy Birthday. pic.twitter.com/XzGVu0g5nY

— Lea Michele (@msleamichele) May 11, 2014

"I only have happy memories of Cory," she said.

"He was not his addiction -- unfortunately, it won. But that wasn't who he was. Cory made me feel like a queen every day. From the minute he said, 'I'm your boyfriend,' I loved every day, and I thank him for being the best boyfriend and making me feel so beautiful."