It's always hard to see someone else doing incredibly well, at something you've always wanted to do incredibly well in.
It's an unavoidably human reaction, one which is usually followed by equally unwelcome guilt when you actually see how nice that person is, and how hard they've worked to get there.
But you know, I've come to think that the world would just be a better place, if we all started to be a bit more honest about envy.