I wonder why people are saying Sasuke will get jealous. In part 1, he got jealous of Naruto and his growing powers. In part 2, he got way over that. He doesn't have problems to admit he's inferior like when he said he was only able to kill Orochimaru because he was weak, or how he didn't really care when Tobi said, "Naruto is probably stronger than you."
I think Sasuke has already passed the point of being jealous of somebody.
I beg to differ. He most likely learned to keep it himself, burying emotion until it keeps getting "hotter". Orochimaru knew that Sasuke felt that effect of a rivalry growing strength. I mean his team rubbed it in, so pretty much Naruto was growing stronger. Sasuke always feel that he's the special and Naruto is just Naruto. Throughout part 2, Naruto never shows off in front of Sasuke because the last time he did, he lost. No, not last arc, the first reunion. The last one he only did rasengan. Now Sasuke is in front row seat and 633 shows that Sasuke is growing aware of Naruto's power. I mean after all, Naruto is the one that persuaded Sasuke to use Itachi' eyes. If that's not rivalry, I don't know what is.