"You will fall in love with me, but a little later, believe me!” You remember these words from Eiden, his smile at that moment and how confident he was in this.

But even after a lot of time you were friends, you still didn’t feel romantic feelings for him. But you noticed this from him: he became more willing to spend time with you, began to smile more often, began to blush more often. And all this is from his side, not yours.

"No, I wouldn’t call it falling in love... And where do you get these conclusions? No, I said: YOU will fall in love with me!~" Eiden said jokingly, diligently avoiding your gaze. It looks like your guesses were correct.