Livre d'Or

Pedantry: I think the title has at least one presupposition that I disagree with.

"The suprisingly short history of heterosexuality". This could be read two ways:

"The surprisingly short history of the concept of heterosexuality" and
"The surprisingly short history of the referent of 'heterosexuality'"

I think, on the first reading, the history isn't suprisingly short, it's unsurprisingly short (well, it might be a surprise to someone). On the second reading, the[1] history isn't surprisingly short, in fact, I don't think it's short at all.

If you've asked yourself the question "Am I straight or bi?" then it's clear that this question doesn't refer to membership of some social group or self-identity or anything like that. Furthermore there's no good reason not to project those concepts back in time, just like there's no problem in saying that dinosaur blood was probably red.

[1] You could write "a surprisingly short history of heterosexuality", starting in 1993 and ending in 1994, the title would be just fine.