1) Sexuality is not fluid; It is the fluid they are imbibing doing the choosing.
2) This is what saner times called sexual excess, but should properly be termed homoeroticism.
3) There is no such thing as homosexuality - none whatsoever. According to real science, sexuality is intrinsically tied to the perpetuation of a species. There is no functional form of sexuality that can occur between two members of the same sex.
4) Science used to teach that all sexuality cared about - how is that for anthropomorphism? - was spreading the gene pool, and that love and morality were fictions created by evolution to get us to fornicate. Now, due to Cultural Marxism taking over the sciences even further, they have added absurd and inconsistent moral relativism to their arrogant and condescending secular atheism.
5) People fall in and out of homoerotic behavior precisely because it is a blurring of the lines that God created due to Original Sin. Sex is sex; everything else is eroticism.
6) Most so-called science nowadays is done to get grants and promote leftism.
7) They used to say, God is dead. I say, Science is dead.
“... and that love and morality were fictions created by evolution to get us to fornicate....”
That is, get us to fornicate, then stay loyal long enough to raise the young that resulted form the fornication.