It was never a major plot point. Chanyoung and Hyunjin are the main couple, so they are the main focus. The guy he was chasing was a fleeting character, as Chanyoung's other friends who appeared for a chapter or two. Author mentioned they may create a separate story for them since their theme is different from this one.
it was a major point. if hyunjin was not interested in the friend, in his words hopelessly in love with him, he wouldn't even be in the same uni as chanyoung. they wouldn't even meet or the whole thing between them wouldn't even start. hyunjin's interest in the said senior was a significant device for chanyoung to truly evaluate his own feelings for hyunjin, and none of that negates their relationship now. infact it's the fact that they resolved the whole situation involving the senior and the feelings is what made their relationship steady. so I think you extinguishing that character and that entire plot point as never major is wrong. it is used to describe the manhwa on this website. so I'd like to know what's with the guy and all. and thanks for letting me know about the seperate story I didn't know that ^^ I'll look forward to it

No side stories so far but what about the glasses friend and the guy he was chasing??