Can you recommend some romance novels where the male lead is very infatuated and will collapse after losing the female lead?

I recommend the drama Princess: Your Highness, please follow the plot to you. The male lead was infatuated with the female lead, and there was no setting where the female lead would die. This book was an ancient romance novel. The female protagonist had transmigrated into the ancient romance drama she was in and became a cannon fodder female supporting role. She was the kind of female supporting role that specialized in the relationship between the male and female protagonists. However, she decided to steal the male protagonist's role and get close to the female protagonist first. The male protagonist's gaze towards the female protagonist became more and more strange. He was holding the script of the male protagonist of a romance drama. What was going on? I hope you like this fairy's recommendation. Muah ~😗