He never cheated. He broke up with his girlfriend the night of the party.
Wat
Idk what you’ve been reading but princess is pretty attached to the MC, hence why he gets jealous sometimes (especially on ch.48)
Tbh idk where the story is going since everything’s mixed up now but I hope Seoha doesn’t end up with him lol
Princess is more hotter than him-
Keyword sometimes. Which kinda makes it seem like he's only irritated that he doesn't get to play with his toy as often anymore instead of him actually having genuine feelings for MC and willing to seriously fight for him.
It doesn't feel like he necessarily treats MC as a 'toy,' but more like MC treats Gongju like a dildo-
Gongju takes care of MC's needs and accepts the whining and gives him advices and such
The dynamic between the two, as well as all 3 in general are just rlly weird
I'm rooting for Princess but by the looks of it it's pretty obvious that MC is gonna end up with the other ML instead. 48 chapters and the story seems to specifically focus on these two, and Princess himself doesn't even look like he's actually romantically interested in MC nor does he ever attempt to pursue him seriously. And he doesn't make that many appearances throughout the story either, so...
Oh, well.