Periwinkle, I am so sorry that this has happened to you. *takes deep breath to tell story*
When I was in fourth grade, I was hanging out with my best friend at recess. We were talking about crushes. She then said this "I would rather marry a girl than a boy" I didn't know that was even possible, and she without knowing it introduced me to LGBTQ.
Fifth grade passed. I didn't even think about liking girls for the next year. I may have had a couple of female crushes without knowing it, but later in that year I started loosening all my crushes on guys. I just didn't like them anymore. I shrugged it off.
Time for sixth grade. I learned that I was moving, and any traces of homosexuality was gone. Again, like in fifth grade I could have liked some girls but not realize it. During this time I read a book about a trans guy. It moved me to start doing research on LGBTQ.
I arrived at my new school. I immediately went "Gross" to the boys. They were all awful. Some were nice, but I could never imagine myself likeing them in any other way besides friendship. Also around this time I started to find the female body attractive. A picture of a guy with abs made me shrug, but a fit girl was so much more attractive. I came to the conclusion I was bi.
When I didn't like boys. I only liked guys at this point, but I was ignorant. I learned more about LGBTQ from my own research. Around May I was working on an art project outside with a friend. Next to us was the Pride Club, so we started talking about it. She was the first person I ever came out too. School ended and I got to thinking. I decided I was bi who liked girls more.
Around July I came to a conclusion that I was lesbian. I just didn't like guys. So I came out to my friends. It went mostly smoothly. Almost all of my friends were fine with it. Except one. During a sleepover party before I came out, we were shipping characters, and I said I shipped Anemone X Tamarin in Wings of Fire. She immediately said "You gay ship? That's so weird. I think liking the same gender is quite weird and unnatural." I wanted to tell her in that moment that the reason I gay shipped was because I was gay, but my social anxiety stopped me.
I told all my friends over email. Everyone responded. Except the friend who didn't like gay shipping. I haven't talked to her since I sent out that email, and at this point I am still worrying that she hates me now. I came out to other friends that I met at camp, and one of them was even bi. She asked me about any girls I had a crush on, and we had a conversation about it.
There is a key factor that I have left out in this story. The telling of my parents. And I wish I had a story for that, but I haven't told them yet. But what I will say, is that I am proud of you for coming out to your parents. Even if they dislike you, at least they know who you are.
And don't hate yourself because you are bi. I mean it could be worse you could be lesbian(I'm just kidding) And who said it wasn't right? Oh right, a big dusty old book written thousands of years ago with thousands of lines, and one line in that big dusty book said marriage is between a woman and a man. And people are using this one line to discriminate against an entire race of humans. This is why I am an atheist(KitCat these jokes aren't funny)People have been wrong before. Women weren't given equal rights because of said dusty old book. People with a gorgeous tan (I mean have you seen some black women? They are so pretty!) weren't given equal rights because of a certain dusty old book. What I'm trying to say is, right and wrong is something about perception. To me, fantasizing about a girl seems right, where I can't stand to try and imagine doing the same things with a guy. That doesn't mean straight, bi or anyone else who likes boys are wrong, it's just wrong to me.
Things that are wrong can be right. To your mom, being bi might be wrong, but to you it's perfectly right. It's just a matter of trying to get someone to see that it might be right.
So until you can admit to yourself that you like girls, yes, liking girls will be wrong. But once you accept yourself, liking who you want to like, doing that is perfectly right.