>>42226387
The lore is that when Anon first came to Equestria and couldn't speak Ponish yet, Fluttershy found him and cared for him like she would any other lost or hurt animal, and developed an obsession with him when he turned out to be sentient and reasoning. She got fixated on the exotic idea of sex with another species that could reason and give consent, especially one whose anatomy is so exotic in comparison to ponies.
Of course, Anon is not into bestiality in any way, shape, or form, and absolutely refuses to entertain her increasingly ridiculous and aggressive advances. Horsefucking is not his fetish.
Fluttershy reasoned that if she could discover Anon's sexual fetishes, he would fall for her, and thus the "Daily Fetish Guess™" was born.
She also resorted to outright trying to rape Anon.
Other mares, shocked and outraged by her behavior toward this visitor from another world, demanded to know why, and found her arguments strangely compelling.
Thus, more and more mares are using any and all means to try to get into Anon's pants.
Of course Princess Cadance learned of it, and blatantly encourages Anon to settle down with a mare, in the hopes of quelling the growing disruption to Equestrian commerce and routine by getting Anon "off the market".
Anon is very clever, sneaky, and resistant, and so the situation continues. By now, about half the mares in Equestria want to have sex with Anon, all because of...
You guessed it.
Fucking Fluttershy.