" Mysterious Love: Husband Is Not Human " fits your needs. The male protagonist Night was a professional god in the game. He had a spark of love with the female protagonist Chu Yi in the game, but he disappeared after that. Many years later, when Chu Yi met Luo Zhiyu in reality, she realized that he was Night from back then. The two began their love story and decided to get married. I hope you like my recommendation.😗