I am 27 and don't have any experience dating. My problem is that I have been totally an introvert for the past 10 years, especially with girls, so I don't have much experience when it comes to girls. Recently I am trying to fix this by getting in touch with some friends or even finding new friends, specifically girls.
The hitch is that my first try happened out of my control (the whole thing got initiated by her), by a girl I really like. I fear getting stuck in the friend-zone or someone snatching her away. I understand that I can't control these things, but I don't want to express my feelings too soon, as the last time I did that I just ended up in the friend-zone from the very beginning. I also lack the experience so I can't even tell if she might be into me or not, whether she likes me, or when would be the right time to tell her how I feel. It is worth mentioning while I have these insecurities and lack of experience, she has lots of friends that are boys/men and spends so much of her time socializing with these friends. I can accept that she has lots of friends that are men in theory, but it still is so hard to wrap my head around it in reality.
Also note she is really special to me. I understand and respect her freedom in choosing friends, also the fact that she is free to eventually choose whether to give me a chance, keep the relationship as friends, or cut all ties with me.
So knowing most of what my problems are, how can I progress the relationship, not so fast that she gets spooked or backs out? And if possible, how can I tell if she might like me or she might give me a chance?
The friendship is now 2 months old, although I knew her for a year. We go the same university. She is about to graduate, and although she studies hard and has much better grades than I do, I helped her lately some of her courses and exams.
Edit: I have to note I am from and live in Iran. Also another aspect of the problem is that playing video games and watching certain movies has made me sort of an over-thinker. I overthink almost everything and also try to plan my moves ahead, so as to be prepared for every situation, which actually works exactly opposite of what I expect it to. Either I don't take action due to the overthinking, or I try to plan things which are completely out of my control and instead ruin everything. Note that this relationship itself was part of the improvements I made, so I am trying to let go of my destructive habits.