Pressured to Marry, She Weds in a Flash, and the Tycoon Calls Her Sister-in-Law

(Completed) Fast-paced + whirlwind marriage + devoted husband + no angst + mutual devotion

The day her childhood friend, whom she'd secretly loved for years, went public with his relationship, Xia Zhihai was being pressured by her family to get married. But she'd been single her whole life. Where was she supposed to find a man to marry?

In a foul mood, she went out drinking to cheer herself up, only to catch the eye of a wealthy family's heir who had just returned from abroad.

When she woke up the next morning, she somehow found herself at the Civil Affairs Bureau, registering their marriage.

It all started with love at first sight. He promised her a lifetime with only each other.