Eren would likely think about how bittersweet it was if he wasn't worried over Mikasa right then. So in a way it's a good thing he does. He stays in the position for a while, confused a little how the temperature changes so suddenly... but that's not important!

"You're burning. We need to get you back and rest. I'll help you home and get some medicine once I've made sure you're resting. I doubt we have any."