The actor - who plays Kurt Hummel in the TV musical comedy - claims he only learned he and co-stars Lea Michele and Cory Monteith wouldn't be returning after the third series on the social networking site.
He said of the axing: "I found out yesterday on Twitter. Yeah, I found out that they made that announcement. I didn't necessarily know that it was going to be our last season next year, I knew something like that was coming up eventually. I mean, we can't be there forever. I don't necessarily want to leave so soon, but I mean, it's fine."
Although he will be sad to go, Chris will look back on the show with great pride.
He said: "It's what it is. And all things come to an end. As a performer, I feel so fulfilled. I have two Emmy nominations and just from hearing from people out in the world about how much the character has helped people. If it's time for a conclusion, I'm fulfilled with it, and I'm fine with it."
Speaking about the decision creator Ryan Murphy - who insisted more characters will leave than stay - said: "We made that decision and I involved Chris and Lea and they thought that was a good idea. They both trust the writing and trust me and felt that it would be great to have an open and closed experience for them to go out while they were on top."
Cory wasn't consulted about the decision, but Ryan explained: "He knows he was a sophomore when the show started."
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