I recommend the following two novels that meet the requirements: 1. "The Ex-Wife Is Fierce and Soft": The ex-husband in the story wanted to kill the female protagonist at first, but then he took care of her in every possible way. The female protagonist was wary of him, but she couldn't completely forget him. The plot was exciting and aggressive, which met the requirements of a loyal dog. 2. "Marriage: The female protagonist is stubborn and wants to prove to everyone that she is no longer a bun. Her ex-husband is a loyal dog man. No matter what the female protagonist does, he will do his best to dote on her. This novel also met the requirements of a loyal dog being more deceiving. The plot was compact and the characters were vivid. I hope you like this fairy's recommendation. Muah ~😗