You were horrified by the concept of the character in your book randomly feeling romance for her opposite gender friend at the end of a coming of age story (it was literally not developed it was just boy and girl friend equals dating eventually) and you became horrified of that happening to you.
The concept of falling in love being inevitable horrified you to your core combined with the random actor in TV show who said men and women can't be friends.
Romance with the opposite sex or same sex being innate to being human horrified you combined with some people saying they feel attraction to everyone within your orientation.
Dating people because you were scared (or wanted to feel like you were stupid enough to believe) that boys always fall in love with girls upon being friends. So you dated someone of the opposite sex only to feel like animal being pet rather than falling in love like the stories.
More feeling horrified around every opposite sex or anyone between your pressured-ly labeled romantic attraction because someone said "You'll just know" so you're waiting for it.
You've picked another "crush" because they probably like you because they interacted with you positively but then someone finally says that it doesn't make sense to see it that way and you realize your feeling make sense.
You realize alloromantic queer fandom can be equally as hard and gay jokes are equally as stereotypical as straight ones and it still makes you uncomfortable like the common "If two people are enemies or rivals for more than 7 years it's not rivals anymore just gay". You like romance stories but the story itself is what explains the romance not anything as simple and nonsensical as that. You know romance is an actual thing the character has to feel and has to be written.
Realized that the fear you feel toward society's idea of who might feel is your significant other is not butterflies or nervousness; it's not wanting to imagine them as your partner.
You realize just like any other genre, books are just books, therefore someone else's story, so it makes sense that you're aromantic and read romance; it is in no way contradictory.
Realize the concept of reading romance as cheating in a relationtionship is equally as bogus as assuming someone likes the characters they're reading about in any context.
Soulmates and romance are nearly fictional concepts that you act out in your eyes. You realized you can enjoy acting them out like being a callous being but actually not approve of people acting like that (not that I don't understand people feel the mysterious but simpler version of love in real life)