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We can't imagine what Lea Michele must be going through. A little over a month after the loss of her boyfriend and co-star Cory Monteith, the Glee star celebrated her 27th birthday on Thursday -- her since the death of Monteith. But despite what we imagine to be a difficult day, Lea took time to thank her fans for their support during the trying times.

“Thank you guys for all the birthday love today:) So beyond thankful for all of you …,” tweeted Lea.

The New Year's Eve star has been putting on a brave face since the news that Monteith had died of a overdose from a mixture of heroin and alcohol in his Vancouver hotel room on July 13. At the 2013 Teen Choice Awards on Aug. 11, the brunette singer/actress made an emotional and heartfelt speech when she dedicated the her Choice TV Actress -- Comedy award to her fallen love.

“I wanted to dedicate this award to Cory,” Lea said onstage at the awards show. “For all of you out there who loved and admired Cory as much as I did, I promise that, with your love, we’re going to get through this together.

We are amazed at Lea's strength during this ordeal and wish her the best birthday. The fifth season of Glee comes back to FOX on Sept. 26.