Tbh I have mixed feelings about this. I think Suah deserves a while the way he's being treated. Sure Juhyeok isn't perfect either and does Mistake too but Suah ignored Juhyeok's numerous requests and treated him selfishly and didn't take responsibility for the mistakes he did to Juhyeok or tried to understand why he is treated this way and think about how he can do it better next time.
I think it would be better if Suah took responsibility and convinced Juhyeok that he'll support his career dreams. Suah should also support him and offer his support without selfishly using his pheromone against him or forcing him to mark him and show him that he can trust Juhyeok so he can trust Suah too.
Instead of him distancing himself from him, what I would find more positive is if Juhyeok becomes jealous of someone who has an obvious interest in Suah and maybe tries to get close to him and if Juhyeok becomes more aware of his own feelings because of that.
I think suah should just give him his cum in container or glass whenever he needs it and just stay away from him. He’s really not returning the same feelings towards suah and that’s why suah needs to try liking someone else for the time being.. then ofc juhyeok will come running to suah hopefully chases him for a while because damn suah heart is strong as heck