
No. There isn't. But there doesn't need to be. Not for them. They both acknowledge what they have is exclusive. And some kind of relationship. Yoohan knows "executive director Yoon" will only tolerate him. Jay is obsessed with yoohan. That's his love tho. He's a psychopath. He doesn't feel most emotions like we do. And even then, what he does feel, i.e excitement, disgust and anger is more than likely amplified. He doesn't understand sadness and empathy, so love must be a complex emotions to him as well. Alot of diagnosed psychopaths don't feel love normally like we regular fellas do. But they have their own form of it. They aren't incapable of it. For Jay, something as simple as being able to empathize with one single person's sadness, was enough to spark a 5 year long obsession. And that obsession only grows deeper. They're really well built when you take a deeper more psychological analysis of the story.
Wait I just thought about it, did any one of them confessed yet?
Maybe I'm forgetting. Anyways.