In his current position he can't really see where Leo's looking anyway, much less whatever expression it is that settles upon his face. He feels somewhat better with Leo's arm over him, not so much warmer but his brother's never shied away from any such contact. Donnie just looks for anything that can at least be normal between them, some sort of reassurance that not everything has been torn, twisted and turned upside-down.

He tenses at the very suggestion. Is that what it is? Zombies are monsters, but Leo's not out chewing on brains... Something else, then? His monster lore is heavily reliant on movies, comics and video games.

"...you're my brother. It's impossible not to worry."