Eren
Always grabs Mikasa whatever he's getting. When he gets up to get a drink, he always gets one for her as well. Doesn't even tell her, just comes in with two drinks and kisses her forehead. Also remembers all of her fastfood orders.

Mikasa
Lets Eren cuddle up to her during horror movies. She isn't quiet scared of them, usually just flinching at loud noises, but she never minds if he gets scared. She'll let him snuggle up to her arm and will even hold his hand. She finds it cute.