Hi proppi & welcome.
You have known each other a long time. Maybe she still just likes you as a friend; or maybe she feels differently now.
I think it's very common for this sort of thing to happen. I had a huge crush on someone during my teens. He was friendly to me, but that's all. Meanwhile another boy had a crush on me. I spent a fair amount of time with him ~ as friends ~ but nothing more. I made it clear that that was all it was or was ever likely to be, but we could still be friends. Maybe that is how Ida feels about you.
Or maybe she's hoping that you still really like her and will ask her out.
It's about time to get this all out in the open, I think, but accepting that friendship might be all that there will ever be between you. Friendship can be heart-wrenching, when you feel that you are in love, but it is a good and positive thing in the long term.
Hopefully, one day, you will find your soul~mate. Then everything will fall into place. It may or may not be Ida.
Good luck!
