Nah, I don't think he's gonna cheat, must have to do with his plan....BUT I can definitely see how this will lead to a misunderstanding like "Oh...so you want to keep seeing more people while dating me? we can do that, let's open the relationship" while TaeMoon will only hear "I don't like u, let's break-up " jajajajaj or something like that
I swear this is not a spolier, I just like to think about what might happen next. If by any chance I'm right is just pure luck, 😂