I feel attracted to someone. I did have a relationship with her before (we were little children at that time, 5-7 years old), but we couldn't continue because of age and distance.
We are both introverted and both have PDDNOS, a form of autism. I can talk to her in person, and I seriously don't feel awkward when I do. I do feel awkward when I text her, skype with her or call her.
Age is not a factor anymore, I am 18 and she is 17. We live in the same country (Netherlands)/province and now that we are older it's easier to keep in touch. But, because of autism, being introverts and not being very good at keeping in touch, distance might still be a tiny problem. We live about 30km away from each other, which I know doesn't sound like a lot, but in my situation it is. If I don't visit her, sometimes we might not speak for a month.
She is almost a female version of myself, we share a lot of problems, interests and other things, which, to be honest, is kinda scary.
I do think she loves me too, but I'm just not sure and if I make one mistake, my chances could be over. I'd like to tell her how I feel about her, without risking our friendship being over if she doesn't share my feelings. I'd love a relationship as the outcome of telling her, but I don't want to lose our friendship if that's not something she wants as well.
Can you help me with possible approaches to opening up to her and telling her how I feel about her?