Honestly at this point I'm hoping that Bora ends up with Geon and Jay starts loving someone else. It seems the reason Bora has feelings for Jay is that he is her closest guy friend. She started to have feelings for him because of that "closeness." And Jay can be replaced easily as a love interest. It's going to be painful for Jay but Geon seems to be a better match. He understood bora in the short amount of time that they got to know each other and bora is more comfortable around him than Jay.
It's never going to happen though. And I blame the author's lack of courage or creativity or whatever it's called.