Wealthy CEO, Unrequited Love, and a Sneaky Male Lead Paired With a Sweet, Delicate Girl

Looking for stories similar to 《Spring Tide, Hard to Resist》. Both leads are each other's only ones. The male lead secretly has a crush on the female lead and is sly beneath his quiet exterior. The female lead is a pampered, delicate young woman. It's a great read, with plenty of push and pull between them and elements of traditional culture.