Someone cmiiw (!!! NOVEL SPOILER!!!)
After the final exam, Jaemin finally admitted that he played along with Seungpyo's 'antic' (cuz he thought Seungpyo wasn't being serious). The misunderstand hurt Seungpyo. Jaemin then realized Seungpyo wasn't joking so he went rushing saying "let's have sex". Seungpyo got more upset cuz Jaemin was like using an easy way to fix their relationship. Eventually they had their first time at Seungpyo's home, confessed their feelings and became lovers

Ok so two possibilities according to me- 1st… Jaemin is gonna mess up his exam due to his own overthinking and blame it all on Seungmin and how “seungmin won.”
2nd… they will have an argument before exam where Jaemin will say all the mean things possible and that will hurt Seungmin so then Jaemin will score more and will try to feel a false sense of achievement but end up hating himself for it…
Both are a lot of angst but i signed up my ass for this since day 1….