Responses
I don't think that was the case. Idk when he was broken up with, before or after the manifestation. But DoYoon prob broke up after the manifestation since he had been mate bonded so now he's tied to some unknown omega. That could be reason. I'm sure he still prefers betas.
But now that he's mate bonded, and has decided to look for his mate....he's tied to the omega regardless.

That little bitch. Saying he likes him for being a beta and then dumping him for only being a beta.