Troubling Friendship

so i think sasuke and naruto are life long friends even though somtimes they won't admit it.............................ACtually during the big fight between them sasuke  adn naruto say they r best friends but sasuke has to go kill his brother etc...........so he leaves.......................so eventually quite awhile later.....like after the 3 year time skip....they find sasuke but he has changed and he says that the only reason he didn't kill naruto before(at the big fight) was because he didn't want to but know he wants to kill him just because he can.............sasuke is just kinda stupid ....deep down he knows it's wrong and he still thinks of them as friends....anyway after reading and wathcing a lot of spoilers i wanted to  draw a part of their friendship before it got really troubling