What would Sasuke have to do to make Naruto never forgive him?

The scenario of him destroying Konoha is unlikely, as Naruto would probably be killed by Sasuke.

I saw a post this week if Sasuke killed Sakura, would Naruto be able to forgive him, many people commented that yes, but for me I think not.

If Sasuke killed Sakura after killing Danzo, Naruto would go crazy. Yes, Naruto forgave Obito who was the cause of his parents' death (but he didn't know them) and even Nagato after hearing his story.

But even though Sakura is a character hated by the fandom (even by Kishimoto himself who does it on purpose for us to hate), for Naruto she is the most important female character for him and he knows that she died at the hands of the one he loved, in addition to completely destroying the dream of "team 7 coming back" and things like that, I think he would actually kill Sasuke or at least defeat him and throw him in prison to be executed.

The scenario of him destroying Konoha is unlikely, as Naruto would probably be killed by Sasuke.

I saw a post this week if Sasuke killed Sakura, would Naruto be able to forgive him, many people commented that yes, but for me I think not.

If Sasuke killed Sakura after killing Danzo, Naruto would go crazy. Yes, Naruto forgave Obito who was the cause of his parents' death (but he didn't know them) and even Nagato after hearing his story.

But even though Sakura is a character hated by the fandom (even by Kishimoto himself who does it on purpose for us to hate), for Naruto she is the most important female character for him and he knows that she died at the hands of the one he loved, in addition to completely destroying the dream of "team 7 coming back" and things like that, I think he would actually kill Sasuke or at least defeat him and throw him in prison to be executed.