Well, while it is arguably admirable that you can admit that you don’t know why, that in fact makes it even more asinine. Could it be that your own sexual identity is wavering enough that you are feeling threatened?
Usually the word epistemology is used in relation to religion and/or religious belief, or other philosophical areas.It is the practice of distinguishing justified belief. Simply put it is what you believe and why.
You might want to examine your beliefs more closely and ask yourself how you came to them…
Edit: who me?