I want to see Blaine doing something. New York would be cool. You have to be economic with what stories you’re telling so people can’t just go off to other cities in the world. If he goes to New York, I wouldn’t see that as such a surprise. Blaine really would like to go to New York, he wants to be wherever Kurt is.
—  Darren Criss on whether he wants Blaine to head to New York
Darren Criss talks about playing Blaine:
  • Gay Times: What's it like to play a gay character as a straight man?
  • Darren: It's fun. But that's the same answer I would give if you asked me what it's like to play a straight character as a gay man. It doesn't really change, I think. I think me playing a gay character is no different from Max Adler—who played Karofsky on the show—having to play a football player. He doesn't play football. Nor is he a homophobic bully. And Heather Morris who plays a dumb blonde, is the furthest thing from dumb, so your job as an actor is always to empathise with your character regardless of if he's... I am not going to put this on the same level as me—don't get this misconstrued—but if you're playing, I don't know, a homicidal maniac, you empathise with that person. I'm not saying playing a gay character is anything close, so be careful with that one on paper! I'm obviously not comparing the two, I'm just saying that it's your job to embrace whatever the character is regardless.
  • Gay Times: What response did you get from friends and family?
  • Darren: I think they were happy I was off the cough and getting a pay-cheque. No, I'm being facetious. Of course there was a positive response. he's a good character, thank God. If he was an asshole, I think people wouldn't be so hot on him. He started off as a very strong-willed, collected, composed character, and as far as young men on television, characters that had that composure, I couldn't really point to any other examples. Especially on a mainstream network show that was in the centre of the cultural zeitgeist, having such a role model character for young, teenage gay couples—I can't really think in my time or any time when there has been such a strong character, somebody who is central to a storyline—to play that is a privilege. That's like being able to put on a superhero costume. I basically got to don something that was much greater than myself, so it was a very positive response, and gain, it was a privilege to be a part of that.
Blaine kicks things off with the appropriately titled “Wanna Be Startin’ Somethin’” – his slick showmanship making him a natural for lead vocals. He starts strutting down the hallway, followed by Brittany and Santana in Cheerios outfits, Mercedes in all black and Kurt in all black with an overwhelming fur hat. And thus, the New Directions’ sassiest members kick off the highly caffeinated number, shooting the episode out of a proverbial cannon.
—  Rolling Stone review of 3.11, “Michael” (x)
Blaine is not playing Danny: Obviously this seems very wrong, but Blaine removed himself from Zuko contention because he’s still too distraught over his breakup with Kurt. He can’t take the pressure of being Kenickie’s second at Thunder Road right now, okay? So he opted to be the Teen Angel and sing what will surely be a swoony version of “Beauty School Drop-out” to Sugar, who was cast as Frenchy. In the meantime, he got to make every expression on the sad-face spectrum while performing “Hopelessly Devoted to You.”
—  Washington Post recap of 4.05, “The Role You Were Born to Play.” [source]
[The Breakup episode of Glee] was a somber installment, with unusually stripped-down musical numbers, the best of which were set in a piano bar called Callbacks. Finn, visiting New York after an aborted stint in the Army, watched Rachel duet with her fellow student and suitor Brody (Dean Geyer) and realized he’d made a horrible mistake by going into embarrassment hibernation and not calling her for four months. Then Blaine sat at the piano and performed an on-the-edge-of-tears rendition of Katy Perry’s “Teenage Dream,” the song with which he’d serenaded Kurt two seasons earlier. Both numbers were about the pain of realizing that geography and maturity have opened an unbridgeable gulf in a relationship that once seemed perfect.
—  Ryan Murphy's Glee and American Horror Story Are Good Again. [s]
“Glee” fans are about to get up close and personal with Darren Criss’ uvula. As Blaine – a tall drink of awesome that’s the perfect combination of Rachel Berry, Kurt Hummel and Tender Heart Care Bear – Darren enters New Directions’ gravitational pull since he’s lead vocalist at Dalton Academy, an all-boys school Kurt’s drawn to. And not just because of its gender exclusivity.

Darren Criss interview with the New York Post on November 9, 2010.

(The day that Never Been Kissed first aired in the US.)

Sounds legit to me.