Mate, they won't get scared away as long as you don't act weird afterwards. Mind you, I hardly talk to the people that I really liked in high school because we went our separate ways and I just stopped caring. If you make the effort to be friends and don't make it awkward you won't lose them.
Just tell me if I'm doing wrong over here.
1)I have her on facebook and don't contact her during weekends and also after school. Therefore not clingy
2) If I am shy and nervous. Which I can't stop... Then it will lead to me overanalysing.
3) Even if I wanted to ask her out I can't its exams and I don't want to interfere with it by asking her out
4) I always start off by telling girls I like them (ONE OF THE REASONS WHY THEY GET SCARED OF ME)
5) The problem is everyone is telling me to ask her out (like what you are doing) and not telling me if she likes me back more than friends or not and then telling me to ask her out.
6) Do you want me to message you a list of all the signs this girl has given me and you can bold the most obvious ones so that I get more confident of knowing that she likes me.