Please I need help ASAP
I'm a 23 year old guy, I have one of my great friends from church, she is 21. Both of us have a good friendship and are a brother and sister, we are from the same group of youth in church, and we have always been good friends.
I used to help her to get over her sad moments by encouraging her and so on. And she also sometimes used to help me and she used to tell me some of her secrets when she is annoyed from something and feels that she needs to talk to someone.
We have a great friendship for years, since we were little. But suddenly I found her changing and doesn't talk to me at all anymore. Even if we are in a group, she comes by and says hi to everyone and then doesn't say anything to me. So I asked her about what is wrong. I found her responding in an offending way and she was nearly shouting at me by saying "Well there is nothing wrong, stop asking this question, you have to be more understandable to know that I had an exam, so don't ask this question again" I felt hurt and i just walked off, then she felt that did something bad, and came and apologized and asked me about what is wrong, so I told her that I feel that she is completely changed, so she said "I'm just stressed from exams" but I felt that there is something else that is making her changed.
When i went home she text me and said "I feel that our friendship is too close and I feel that I need my distance, I feel a bit uncomfortable, you are a guy and I'm a girl and there should be limits"
I was very hurt by her words, but I responded and said "I promise you that I will give you your distance and that I will not annoy you again"
Now I don't know what to do, she is very dear friend to my heart, I consider her as my little sister and seriously I don't want to lose her friendship, simply because both of us were very good friends to eachother,
Please help me if you can,
I would like to hear the opinion of the females as well