Hmm, I would have said no, because I don’t seem to enjoy sex with other women, but when I reached the age of 30 I fell deeply in love with a woman. So maybe I am partially bisexual, but of course I can only speak for myself.
No. It’s normal, for a straight person, to acknowledge that a another person of the same sex is attractive.
The difference for bisexual/pansexual/gay people is that they are drawn to that attractive person. They might feel a bit aroused, just by admiring them. They might fantasize about them. They might want to be with them. They want to strike up a conversation and see where it goes.
But straight people typically just stop at, “Wow, that person is really good looking. I wish I was that sexy.” Or something like that. And then they think about something else. They don’t sit there and daydream about the person.
Toxic masculinity makes everyone scared to not be manly enough
The answer to your question is yes, but you’ll get a lot of answers trying to simplify heterosexuality
It’s actually a lot more complicated than that, there’s a whole bunch of hormones that go into tricking your brain into not realizing that this is just a skinnier human with longer hair, a higher voice, and an innie instead of an outie.
I could and did have sex including men when I was young and confused but for decades I’ve been happy with women for sex , although I honestly believe people are born bi gay or straight or somewhere within a range - The important thing is were born with inclinations and to accept them and keep it real somehow easier said than done - It can be very confusing