Just two days after his fellow actor's passing, Criss wore a black ribbon in honor of Monteith at a screening of his upcoming movie, Girl Most Likely, in New York City on Monday.
A source told E! News that the 26-year-old "was in a pleasant, but somber mood" throughout the evening, which also included a Cinema Society party sponsored by Kim Crawford Wines at the Hotel Americano.
While he did attend Monday evening's event, Criss nevertheless decided to cancel his appearances on both Good Morning America and Live with Kelly & Michael on Tuesday.
E! News has also learned that Criss will not be participating in the Girl Most Likely junket that is scheduled to take place this afternoon.
We can't say we blame him.
Meanwhile, on Glee's Facebook page, fans are being informed that if they would like to make a donation in memory of Monteith, there are three charities that meant a lot to him.
"Cory was incredibly sincere and passionate about helping homeless youth and particularly disadvantaged youth find purpose and strength through the arts," a Virgin Group spokesperson told E! News. "Last May when he and Richard [Branson] were in Vancouver for the inauguration of Project Limelight, we were inspired by how encouraging he was with the children and how excited he was to contribute a worthy alternative to the streets. Nothing will overshadow our memories of Cory's heartfelt intention to help at-risk youth."
Desiree Mohammadi, the founder and creator of Montourage Unite, had also been working with the Glee star and his agent on several fundraising projects relating to Monteith's favorite charities.
"The world lost a truly remarkable man. He touched the lives of millions, of all ages," Mohammadi told E! News. "Cory was an amazing young man with a generous heart...Our heart goes out to his family, fans and close friends. Cory was a friend and will be dearly missed."
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