Lesbian honest

Nobody is understanding me. I tell my friend that im gay.Im just not attracted to boys/men anymore. I want a female who i can love and cherish for the rest of my time that im on this earth for. Since im only 16 they think I really dont have a brain where i cant think for myself. They all say dont worry you'll find a dude. They dont get it im not into them. Its like there not looking at it from my perspective. If i say im not attracted to a certain sex who are you to then for say that i am. How do i get them to understand. It seems no matter how many times i say this there just not getting it. Do i need to hurry and get a gf for them to finally understand. It's frustrating because they're constantly trying to get me with a dude. What can i do. Do need new friends. Its like joking but im not. Its a joke to all of them im not taken serious. Its like them saying shut up you dont know what you want but we do.