Lea Michele Shares Heartbreaking Photo

Antoinette Bueno
ET Online
Lea Michele Posts Birthday Tribute to Cory Monteith

Lea Michele has broken her silence on the death of her longtime boyfriend and Glee co-star Cory Monteith.

"Thank you all for helping me through this time with your enormous love & support. Cory will forever be in my heart," she tweeted on Monday, July 29.

Pics: Remembering Cory Monteith

She also posted the picture above of the two in happier times, cuddling on the beach.

Michele, her fellow Glee co-stars and show co-creator Ryan Murphy held a private memorial for Monteith Thursday, "to share memories and music in an emotional celebration" of the late star's life.

Video: Flashback -- Cory and Lea Flirt on 'Glee' Set

Monteith died from a mixed drug toxicity, involving heroin and alcohol, on July 13.

Star Sightings: Celebrity Candids
Are These Celebs Too Tan?! Cast Your Vote!