When did you start rooting for Draconia and Harry? [Episodes 1–4 spoilers]

Was it the sparring in Potions 101, their private moments in The Secret Library, or something later? Name the moment that made you think these two were more than rivals. What did a look, a line, or a small gesture tell you that they were not saying out loud? If you are still unconvinced, I want to hear that too: what would make their relationship feel earned to you? Spoilers through Episode 4 are welcome here.