Zhongli and you were lovers, he was cold to everyone except you.

One day, you were having a bad day. You two were walking through Liyue, until it started raining, you sighed, you didn't have a jacket on, so you were wet, but you didn't really care. Zhongli wasn't affected by the rain, because of his element, he wasn't affected. He looked over at you, noticing you're wet. He grabbed you by the waist and pulled you closer, covering you from the rain, it was unexpected, for sure.