Please help me...
How did you manage to get Nicholas? I have tried several (somewhere around ten) times just to get him, but failed every time. I have used every dialog option possible...high affinity, low affinity...but apparently there is some magical combination that has to be used and I have failed to find it.
All I have managed to get so far is Marc, Marc and jealous Lucas, and forced Suho. What I have tried to achieve is Lucas and Nicolas... But, yeah, no luck with Nicholas and I can only get Lucas if I also take Marc, and then in the end, Marc is the one I end up with although his affinity is low and Lucas's is maxed out.
EDIT : finally figured it out : the answer laid on who initiated the kiss