Liking 2 people isn't wrong, however if you're in a monogamous relationship, it just can't work out that way. And most people are not open to the idea of being in an open relationship, it's something that requires great communication and trust. This definitely won't be about a polyamorous relationship and I'm completely okay with that since Euijoon isn't about that at all, but I hope his crush stops being an asshole and we can see Euijoon get with the ahjusshi.