Lea Michelle among attendees at Glee star Cory Monteith's memorial

Lea Michele attended a memorial for Cory Monteith in Los Angeles on Thursday.

The heartbroken actress, 26, whose boyfriend of 14 months was found dead in his hotel room in Vancouver, Canada after he overdosed on heroin and alcohol, joined her 'Glee' co-stars and the show's creator Ryan Murphy at a private service to remember Cory, 31, who battled addiction since he was a teenager.