The beginning of the tragedy

I knew it! After Hiroto said that line I just lost taste for everything that happened during the ep, even though I liked how things developed between them and how their friends are taking part in all of this with the jealousy plan and all. I felt like this is the calm before the storm, the fluffy and cute moments won't last for long and just like Hiroto said: "But that was the beginning of our tragedy", that line gives me a bad feeling.