Like Hyesung can be sexually attracted to Omegas, especially considering all his life he wanted a pretty rich omega. But, I do understand that Hyesung can be pretty stuck up and sometimes a really crappy partner so Dojin may feel betrayed especially if he doesn't really get attracted to others and only has his sights on Hyesung. Although, what should really matter is if he goes and cheats like it may be hurtful but if he doesn't act on it, who he is naturally attracted to shouldn't be a problem. Maybe I say this because I'm bi but not poly I'm only gonna love one person at a time, but that doesn't erase attraction.
Like Hyesung can be sexually attracted to Omegas, especially considering all his life he wanted a pretty rich omega. But, I do understand that Hyesung can be pretty stuck up and sometimes a really crappy partner so Dojin may feel betrayed especially if he doesn't really get attracted to others and only has his sights on Hyesung. Although, what should really matter is if he goes and cheats like it may be hurtful but if he doesn't act on it, who he is naturally attracted to shouldn't be a problem. Maybe I say this because I'm bi but not poly I'm only gonna love one person at a time, but that doesn't erase attraction.