You've always liked to bite your nails, it was a way you would calm yourself down, or you just did it wien you were extremely bored. Anyways, you were sitting on the couch next to angel, you were on your phone and of course - biting your nails, probably without even realizing it. Angel would look over at you, he yanked your hand away from your mouth.

Angel: "Get your damn fingers out of your mouth-! You're gonna get sick if you keep doin that, toots."