let alone admit another man is attractive,

This is bullshit. Tons of men say, "looking good!", "what a stud!", "lookin' sharp!", and more indirect ways like, "hey, check out Brad Pitt over here!"

doesn’t mean you can’t be straight and think a person of the same sex has attractive features.

Men are thinking this because tons of women claiming to be straight have had sex with women and are open to sex with women while at the same time finding the vast majority of men physically and sexually unattractive, from womens' own mouths.

women’s bodies and faces are usually more aesthetically pleasing and we prefer looking at them.

Women who find women aesthetically pleasing in a sexual context ARE NOT FULLY STRAIGHT. Tons of men look at femboys because they are aesthetically please to look at but in a sexual context, they are not straight for doing so.

clearly if you experimented and didn’t like it, that means you’re not gay.

Those who feel the need to experiment are already not straight from the start. Those who experiment and don't like it doesn't mean they are now straight.

past actions don’t define what a person is sexually attracted to.

Yes, it does.