[Ohhhh boy. Gar don't step in it and claim Eren's complacent. He decides it's best to do damage control before it gets out of hand, putting his hand on Eren's arm and speaking up]

It's not that he's accepting the weird stuff, he just worries about people. Even if he's sometimes not great at expressing it. [Or ever, really.] And I can't really deny you can be pretty reckless sometimes, Gar. Even if your powers are strong, you should be careful. That's all.

[As for the Mimori thing]

Aha...as long as you don't clue Baren in. Though I'm sure she feels bad about it.