FAHRENHEIT 451 FANFICTIONS????? WHAT????

Explain to me why I have found so many fanfictions of Guy Montag x Captain Beatty on AO3 AND WATTPAD..... IT'S FAHRENHEIT 451, WHY IS THE MAIN CHARACTER SHIPPED WITH THE ANTAGONIST HE BURNS ALIVE????? I remember reading a mpreg fanfiction of them two while I was in year 7... why...