JayHoon Prada After Party but make it Alex Henry NYE Party RWRB! AU (not really), wherein:

SH’s heart sinks as he spots JY talking intimately with another guest (happens to be JW, his close friend). Consumed by jealousy, he turns to drinks carelessly, hoping to drown his feelings. But JY notices SH’s distress and, concerned, so he pulls him away from the crowd.

Outside and overwhelmed, SH unleashes his pent-up emotions, shouting about how much he hates JY for being oblivious to his love and pining over him for so long. Just as the weight of his words hangs in the air, JY surprises him with a sudden kiss. In that moment, SH’s drunken haze clears, revealing that JY also has secretly been in love with him all along. (Yes they both are idiots (fond))