romantic orientation

As always, only you can decide what you are, but have you considered grey romantic or lithoromantic? If you have only ever felt this attraction to girls it does sound like some kind of homoromantic attraction. Since you were friends first demiromantic does seem to fit also. You might want to also consider aromantic, like you would date those people if they wanted to but you've never actually had a romantic crush on them yourself. Kinda like how an asexual can want a sex life and find people they would have sex with, while not actually feeling sexual attraction. You can always look at the definitions of the different romantic attractions and see if one just explains you, that's how I figured myself out. Ultimately it's totally up to you! Even not labeling your romantic attraction may work the best for you for now, which is totally cool too. It's a complicated thing to figure out!