I once thought that Naruto is a Bi.
And the reason being, One of the realistic attributes of Bisexuals (in real life as well as in the media portrayal) is that, they never fail/hesitate to embrace their strong feelings for the Opposite Gender. Or to be factual, they even hide under their part Hetrosexuality to avoid social stigma and ostracization (in Repressed societies).
But Naruto, when it comes to embracing his 'supposed' Heterosexuality, Naruto either avoids the situation intentionally or lies blatantly...
1. Naruto ignoring Hinata's proposal despite remembering that incident.
2. Naruto lying about planning to Date Sakura but all he did was thinking about Sasuke,
3. Naruto admitting that the Promise was never for Sakura
Even though he confessed to Sai that the Promise to bring back Sasuke was for her few chapters earlier.
4. Naruto instead of going on a Murderous Rage after seeing his 'supposed' love of his life Sakura was about to be killed by his 'Friend' Sasuke, he just ended up saying, "I understand why you did it".
5. Naruto instead of saying Iruka and Team 7 saved his life, he said Iruka & Sasuke (ignoring Sakura) saved him... A perfect situation for Naruto to emphasize ‘A Girl’s’ importance... But he just.... mehh
6. Naruto failed to point either 'Sakura's' or 'Hinata's' name in front of Minato when saying final Good Bye even though he nodded that Sakura was his Girl Friend many chapters ago.
Lies, Lies, Indifference.... Everywhere.
There’s literally no need for Naruto to lie about his Promise or Date to Sakura, or being indifferent to Hinata’s proposal... He could’ve just been....HONEST, you know. It won’t cost him anything.
Added to that Naruto only 'seemingly' tries to embrace Heterosexuality after he has some 'awkward' encounters with Guys. That is, Using Heterosexuality as a distraction.
1. Naruto wants to verify his feelings for Sakura after he accidentally kissed Sasuke.
“I wanted to know her feelings towards me...”
2. Naruto tried to peek ladies' bath after he shared 'naked' bath with Men (something which is very common in Japan).
3. Naruto, once again went to peek ladies' bath after he was lost in thought about Sasuke.
So, Naruto is Faking his Heterosexuality.... If he is truly a Bi, he really doesn’t have to go after women right after his ‘unusual’ encounters with Men, you know... He could’ve just pulled a Jiraiya and peeked straight away rather than using it as a distraction...
These Lies and Indifferences and uhhh Faking are the characteristic attributes of Gay....
That's why I claim he isn't a Bi but an extremely closeted Gay.