Lea Michele has lead tributes to Cory Monteith on the third anniversary of his death.

The 29-year-old actress - who dated her 'Glee' co-star, from November 2011 until his untimely death from an overdose on July 13, 2013 - shared a touching message alongside a photograph of her beloved ex-boyfriend on her Twitter account on Wednesday (13.07.16).

She wrote: ''I know everyday you're watching over me, and smiling. Love and miss you Cory, everyday, but today a little more.. (sic)''

Kevin McHale - who played Artie Abrams in the Fox series - shared a GIF of him and Cory on Twitter and said he will remember him for his ''smile''.

Alongside the moving image, he wrote: ''Today I woke up thinking abt ur smile & how infectious it was. U made us laugh & feel loved everyday. #3YearsWithoutCory (sic)''

'Glee's Jenna Ushkowitz, 30, also penned a heartfelt message to Cory - who was just 31 when he tragically passed away - in which she said his ''humility'' and ''goofball nature'' would ''never fade''.

Alongside a picture of Cory - who played quarterback Finn Hudson in the musical comedy - on the drums, she wrote: ''The time may pass but the warmth of your generous soul and the humility in your goofball nature will never fade. You are always will be our quarterback. we miss you, friend. #3yearswithoutcory (sic)''

And their co-star Naya Rivera Dorsey added to her Twitter: ''Always missed and never forgotten. #3YearsWithoutCory (sic)''

And 'Glee' producer, Paris Barclay said he couldn't believe it had been three years since his death and thanked him for being a great teacher.

He wrote: ''Can't believe it's been #3YearsWithoutCorey. You taught me so much ... Peace ... See, told you he was a teacher! (sic)''