does this have a love triangle :0?
No, the third wheel is the antagonist, not a love interest.
Wait i don't think it will really be an open ending since the author mentioned in the after word some stuff like that depended affection and conflicts between jinwoo and teayoung are going to be center stage in season 2, or that's what i think so js let's hope it won't be an open ending I'd jump (⊙…⊙ )
On the other hand we doesn't know what he said when his friend asked he still interested in Jinwoo and he is usually tossing people around like a hobby.
Exactly what I'm saying, teayoung's charcter will have much more development in my opinion and it wouldn't feel right to be an open ending
yall need to know that the development of their relationship ship is not just in passion but throughout the whole novel, diaponic symphonia and the other novels, think of this as an introduction probably lol