Just pasting what I posted on another thread as I think it would be helpful for you.
For a start, consider whether mansplaining female sexuality to women, then saying you've browsed Reddit and it proves they're wrong when they disagree with your statement about their own sexual preferences, is a good idea.
Spoiler alert... it's not.
Having read your other one, you admit yourself that you have insecurities about a woman leaving you for another woman. Stop projecting that insecurity onto literally every woman in the world (by saying none are truly straight, even if they claim they are) and you will be a more attractive prospect for a partner..
And below is some commentary on the study explaining how reductive and tbh offensive the 'findings' are. And I say that as a bisexual woman.
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Such findings might seem “revolutionary,” but when researchers use totalizing words like “never” when describing a highly intricate concept, they tend to reduce complexities more than they highlight them, which further perpetuates the familiar (and problematic) narrative of the woman as a highly sexual and unknowing object, and the scientist as the superior, omniscient being.
Queen’s University Meredith Chivers came to that conclusion after conducting a 2007 study similar to that of the Essex researchers. Said Chivers, who presented participants clips of naked men and women and monitored viewers’ blood flow, “To conclude that women are bisexual on the basis of their sexual responding overlooks the complexity and multidimensionality of female sexuality.”
Policy Mic says blanket statements about sexuality aren’t exactly nuanced statements about sexuality
“Evolutionary explanations aside, Rieger’s findings overlook a host of outside factors, particularly the sexualization of women in the media, which could contribute even to straight women’s perceptions of other female bodies as sexual objects. Men’s bodies aren’t sexualized or objectified in the same way (in fact, it’s not even close). Our culture’s tendency to objectify women’s bodies, which has been chronicled again and again and again, teaches us to conclude that women are invariably sexual objects, regardless of whether we actually want to have sex with them.
Furthermore, Rieger’s study neglected to address the fact that it’s generally more socially acceptable for women to self-identify as bisexual than it is for men, due in no small part to cultural tropes that fetishize women having sex with other women. Such tropes, combined with the idea that women in general are more likely to be objectified than men, might play a role in conditioning women to respond to other female bodies with sexual arousal, regardless of whether they self-identify as straight or gay.”
Regardless of whether you buy the idea that sexual orientation can be defined by something as primal as pupil dilation, or that the study is just the latest example of expert attempts to define and “know” female sexuality more than the sexuality possessing woman herself, the study generated some impassioned responses by the media and public writ large:
AskMen calls study “ludicrous”
“Saying “sorry ladies, but you’re all a buncha queers” because they express a minute physical response at the sight of, well, anything is ludicrous. I don’t have access to the full study text to check the methodology and control parameters, but I’m willing to bet that if you tell people they’re participating in a study about human sexuality and will be viewing some sexy videos, their pumps are going to be somewhat primed.
Here’s a better way to identify who (and what) people are attracted to, if you need that information for some reason: Ask them, and then believe them.”