I was one of the people at the filming today and I saw a callsheet for the Scandals filming and from what I could tell, based on the scene numbers and the placement of the scenes in the ep, the flashback DOES NOT HAPPEN at the Lima Bean, it happens during the course of Kurt, Blaine (and Karofsky’s) meeting at Scandals. It goes:
Blaine and Kurt meet at Scandals (I’m not sure if they just happen to see each other there or planned to meet, I don’t remember the wording), then Karofsky shows up. Then they talk or whatever (I didn’t see a script so I have no idea what they say to each other or anything like that), then the flashback. I don’t have any info on dialogue or how they say it but Kurt definitely finds out about them at Scandals.
I’m not saying this to discredit MJ. Her spoilers have been great and reliable. But they’ve been changing some things and I have no idea if this is some of that or what. I just know what I saw on the callsheet and a little bit of what we could see from the monitors when they were filming.