The scenario described—a protagonist (Ethan) between two others—is a classic trope often referred to as "Menage" or "Threesome" romance. Readers are often drawn to these stories for several reasons:
Does the tension between Ethan and the two men build naturally, or is it rushed? RFC - Ethan entre 2 sementales brasileГ±os - Dan...
Here is a brief analysis of the appeal and structure of this genre: The Appeal of "Shared" Romance Narratives RFC - Ethan entre 2 sementales brasileГ±os - Dan...