Prompt: "But imagine your OTP cuddling during a THUNDERSTORM and Person B is TERRIFED and Person A has to comfort them and strokes their hair until they fall asleep[!]"
Chell quietly held Wheatley as he curled into the smallest ball possible next to her in bed. He never liked it when thunderstorms came up outside. The first time one happened, he had been left alone in the house, completely afraid of the sounds outside. Chell came home to find him cooped up in the closet, the storm long over. Even after a talk and explanation on what happened, the events still scared him. Whenever a bolt flashed, or the roll of thunder boomed right outside their window, he would jump or shudder.
Chell quietly stroked his hair, trying to help him calm down. This was one of the few times he wasn't humming while she did so, but it did visibly begin to calm him down as the tight grip around her body relaxed.
Wheatley felt uncomfortable going into sleep mode when something like that was happening outside. When he heard a noise, he was instantly awake, like a computer waking from sleep. Then he remained up until he had reason to fall back asleep, or just waited until Chell herself woke up.
Tonight, Chell could easily see that Wheatley would have trouble getting there tonight. The thunder was right overhead and it seemed like every few seconds there was a flash outside. And each time, Wheatley went back to hugging her to the point of squeezing the air out of her lungs. She didn't bother telling him to stop, because she knew it was helping him cope.
Eventually, the rain began to die down, and along with it, Wheatley's fear. Chell kept on stroking his hair and softly humming as he finally settled into a comfortable position, arms still locked around Chell. He wasn't letting her go anywhere, lest the rain started up again.
He finally allowed himself to go into sleep mode, and Chell stopped humming, relived that the storm had died down, and along with it, Wheatley. Shifting slightly into a less constricting position, Chell fell asleep as well, not having to worry about anything else until morning…