Polls: Guy's Behavior

What do you girls think of when you think of a charming guy? A Sweet guy? Is it how he carries himself? Is it how he talks? Is it what he says?

Also: What kind of guy do you prefer.

There's a girl I like. She started flirting with me a few weeks ago. I started talking to her, brief exchanges in the hallways around the university - which she seemed delighted by - I asked her out, she said maybe, I asked her again days later, she said we should plan to get together after break - I asked her after break, and she said "Yes, but I'm just really crazy right now". I was going to ask her again in a few days, "when can we get together? " - but, one thing keeps popping up in my mind - on two separate occasions, she has made "Stalking" jokes.

Once when I ran into her as I walked around a corner, she laughed and said something about me stalking her - the second time was the last time we spoke, I asked if I had indeed seen her working at a restaurant I past by during the weekend - and she said "now you can stalk me"

What does she mean by this? She smiles and laughs when she says it and gives me a lot of direct eye contact - I'm just not sure what she means underneath it all by bringing "stalking" up. I have made absolutely "Zero" attempt to find/follow her - and often I find her following me, or staring at me from across a distance.

What does she mean to imply by making these stalking jokes?

Is she using it as a metaphor? She is, what I suppose one would call, a bright woman - she is in the college honor system after all. So could this just be a brainy way of teasing me, and in her way letting me know she likes my attention?

Points awarded for all answers - please don't just write "cheese burger" as a response =)

When a girl says Maybe when you ask them out, what does it mean?

Does "Maybe" mean she is considering it and is inclined to say "YES" but wants to think about it a bit?

AND

Does "I don't know" basically mean she doesn't want to consider it and is basically saying "NO"?

In my specific example:

There's this girl, we give each other a lot of eye contact, she follows me when I talk, she bumped into me in the halls on campus today(Monday), and after we talked for a couple minutes and she was all smiles, I asked her if she would want to do something with me sometime.

She looked like she was about to say yes, then said maybe with a smile. I said, "think about it, I'll talk to you on Wednesday. "(I share a class with her then).

Ladies, what do you think? What does "Maybe" mean to you?