I just realized these two things happened in the same spot.
3x01 Blaine surprises Kurt with his transfer to McKinley, and Kurt worries that if Blaine did it for him, it could lead to resentment & a horrible break up. Blaine--of course--reassures him that's not the case.
(Then we get in 3x17 "I changed schools for you, that doesn't make you feel loved?" and in 4x03 "It didn't hit me until now, I came to McKinley for Kurt. That's it. And now he's gone. ... I did all this for him. All of it.")
And in 4x06, this is the location where Kurt officially breaks up with Blaine.
Also: morning v. late night (beginning v. ending) & closed v. open doors (staying v. going).