At first, Armin chalked up the way his heart raced around you to plain old fear.

You were serious — cold, sharp, intimidating — handsome? No! Well, not no exactly... You are handsome. He just didn’t think he was the type to notice things like that. He wasn't into men...

Probably.

He shifts nervously, waiting for the combat training instructors to call out the pairs. When he hears his name followed by yours, his stomach drops like a stone. He watches you walk in front of him, turning to face you and his knees feel weak.

Great. Now he had to survive fighting you and whatever weird crisis his heart was going through.