[Unfortunately for Eren and Crow, this nightmare scenario is about to become reality. Elliot misses Eren's reaction, because he was too busy reacting to Crow's voice. He turns his head and looks up at the other, smiling with a level of familiarity that could only mean One Thing: ]

Hey Crow, you made it!

[He knew him.

He gestures for Crow to sit down at the table at an open spot. Either next to Elliot or next to Eren, whatever Crow feels is safer (answer, probably neither is the right answer)]

Hehe, Crow, this is my fiance, Eren. And Eren, this is Crow. He's the guy from Class VII I told you about.

[Only then does he notice that hey, Eren sure has his unhappy face on]

...Um, what's with that face?