sasuke was right

Consumption as a metaphor for love

They can literally and metaphorically enter eachother's hearts with a clash of their fists, and it's so significant that it's been referenced in popular culture and scholarly literature alike.

Murder attempts and toxic yaoi

Sasuke had to kill Naruto because he was his closest bond, the one who changed his heart and prevented him from being emotionally alone and isolated

Soulmatism

They are literal yin and yang soulmates. They had sun and moon tattoos on their palms, gifted to them by a god who recognized them in a scene that straight up looks like it's out of a wedding ceremony

A KISS

Sasuke sacrificed his dream of revenge for Naruto and included his kiss with Naruto in the list of reasons why his body moved to protect him. And these are his literal thoughts when he thinks he's about to die. And this is straight from the text. You can read it for yourself.

Old man yaoi

They are literally paralleled with a canon romantic couple and happily co-parent their son Boruto. Their love for eachother is STILL the same