No, Don't Be Like That, My Husband Will Cry

A "good girl" who turns dark: married commoner woman vs. irritable, brooding, unmarried nobleman (warning: possessive male lead);

[Cross-national romance + very bad, slightly twisted male lead + forced love + groveling pursuit]

Commoners, no, the lower classes are filthy, poor, greedy, base... and full of lies.

So thinks Fei Er, a nobleman at the very top of the social ladder. He has always known that his future wife can only be a noblewoman like himself, or perhaps a princess of the royal family.

She would never be a commoner, someone so lowly that even her skin, blood, and saliva seem poisonous.

And she certainly wouldn't be married!

After an accident abroad lands her in Fei Er's hands, Lu Su decides that being treated like a dog isn't so bad.

After all, the noble Fei Er would never force a dog to sleep with him, or use the same brutal, violent methods he uses against commoners.

But she is a person, after all.

When he catches her during her final escape attempt, the nobleman who never once deigned to look her in the eye bows his head and madly declares that he wants to be her dog.

And he won't let her refuse.

One day, when Lu Su is sprawled on the bed and can't get up, she starts thinking about abandoning the vicious dog again.