His Favorite Quirk That You Have
Tony:
Tony loves when you bite your lip whenever you're focusing on something; he finds it really sexy. You will always catch him staring at you when you do this.
Steve:
You tend to play with your hair randomly at times. Steve finds it extremely cute; when you catch him staring he ends up blushing like crazy.
Bruce:
When you guys are in the lab you tend to tap your fingers against your teeth. When he hears the tapping he will just watch you; when you catch him staring you'll both just blush and look away.
Clint:
When you guys are at the range you scrunch up your nose when your trying to focus. He finds it extremely adorable and absolutely loves when you do it.
Thor:
You tend to lick your lips alot, you never really noticed it until you saw Thor staring at you in awe.
Natasha:
You play with you necklace alot. All of the time actually. She always just watches you when you're doing this because for some reason she finds it adorable.