The nickname she had for him says it all. He was a puppy who tried to follow her around everywhere.
Kyo grew to realize this -- that she had to go and if he could, he would have left too. They did reconcile though. And Ofelia and I have chatted. We have no ill will to each other. We just probably understand each other more than anyone could understand -- Nowaki and Kyo that is -- but it makes it easy to get angry because you know the other understands how hard things are. So it can feel a bit like a betrayal to an immature mind.
What I'm jealous of now? I don't know. Random weird stuff. When my half- brother is in town, I have to step back because I hate sharing my dad with him. And he does the same. It was probably kind of cute when I was 5 and he was 20ish. But now, I know how stupid it looks and take a step back once I pick up I'm fall into old habits. I think that is the one thing I do in this life that overlaps with Kyo's jealousy/envy.