[There is every reason not to separate, but Reiner also knows that most of his reasoning is emotional rather than tactical. Which are exactly the sort of arguments that won't win over Annie.]

If we play it safe and stick to our cover stories, there is no reason why we'd draw too much attention.

[He crosses his arms over his chest, leaning back in his chair a bit.]

We have Armin and Eren to consider too. If we separate, there is the chance they might be able to corner one of us. They won't attack if the three of us stick together.