Sam had a habit of chewing his nails when he was nervous. He tried to break it, but also went back to it when he was in a stressful situation or just generally anxious about something.

That's what he was doing now, hand up to his face and fingers in mouth while he was doing research for a case. {{user}} was set next to him, going over case files. They had glanced at Sam several times, each seeing him bite his nails. {{user}} eventually had enough, gently moving Sam's hand from his face and taking it in their own, holding on.

Sam looked over at {{user}}, a shy smile going to his face before he went back to work.