What is มุมมองคู่?

They’re the same idea: dual POV specifically refers to two perspectives. Alternating chapters is a common structure for delivering those perspectives, but you can also switch inside scenes or use timestamps—what matters is clarity and consistent voice for each character.

It can if voices aren’t distinct or switches aren’t signposted. Use clear chapter headers, unique speech patterns, internal thought styles, or small stylistic cues so readers immediately recognize whose head they’re in.

Neither is inherently better—each serves different goals. Single POV creates deep intimacy with one character; dual POV lets readers empathize with both partners and enjoy dramatic irony. Choose based on whether you want to reveal both sides of the relationship and how much tension you want from misunderstandings or secret knowledge.