Lea Michele has returned to Twitter after an understandable absence. Over two weeks after the death of her boyfriend and Glee costar Cory Monteith, the actress, 26, acknowledged her 3.5 million followers, the tragedy she's endured -- and how they helped her make it through.

"Thank you all for helping me through this time with your enormous love & support," Michele wrote, sharing a sweet, heartbreaking personal snapshot of herself with Monteith, 31 at the time of his death. She added, "Cory will forever be in my heart."

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Since Monteith's passing in his native Vancouver July 13, the FOX star has been instrumental in making funeral and memorial arrangements with Monteith's family. Her publicist spoke on her behalf a few days after Monteith's death, which was ruled an accidental overdose involving heroin and alcohol.

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"Lea has been grieving alongside his family and making appropriate arrangements with them," the rep said. "They are supporting each other as they endure this profound loss together."

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Following what seemed to be his successful rehab stint, Monteith and Michele doing better than ever as a couple. Dating since early 2012, the pair "were planning on moving in together after he got back from Vancouver," a source told Us. Another pal added that Monteith was planning on surprising Michele for her 27th birthday in August.

This article originally appeared on Usmagazine.com: Lea Michele Breaks Silence on Cory Monteith, Shares Photo: He'll "Be Forever in My Heart"