I'm so confused. I only have one close friend that I can share everything with.

I started up a new friendship with this lady at college. She is sweet, friendly, respectful, kind...list goes on. We call each other on the phone when we need help with homework...etc. I will be going to church with her on Saturday. Over Christmas holidays...I went to a dinner party and Christmas party with her.

So where is the confusion??

She sometimes holds her emotions or feelings close to her and it's hard to read her. I feel at times distant from her. She is a private person.

How do I become a better friend to her without crossing boundaries or messing things up? She is truly my only friend at college.