> I wouldn't magically become bisexual.

Of course not. This is a sci fi story so you wouldn’t magically become bisexual you would scientifically become bisexual. The flavor and style of bisexual that you become, however, would be pretty different from and less troublesome than what irks you in the 21st century by the simple fact of a completely different set of societal mores having been in place long before your birth (ie your bisexuality would not be thrust upon you, your bisexuality would be what you were born and grew up with)