I'm trying to figure out if she likes me, if she just has a crush on me, or what? I'm 18 and she's 16.

Well, I'll start off with how we met. I was helping a friend buy a computer and he knows her so they talk for a bit. We walk around looking at the computers for a while and my best friend called my cell. I picked it up and told him I would call him back. She knew him too from high school, and she wanted to talk to him, so I let her. Then all of a sudden she walks off with my phone, but I was busy talking to the sales guy about this computer so I just let her go. Apperently she told him that she thought I was cute and was asking him whether or not I was single, got my phone number, my AIM, and just asked him general stuff about me. And as we are about to leave, she says she wants to see my car and starts to hold my hand. At that time I didn't know what she talked to my best friend about on the cell so I just went along with it. She was cute but I didn't think much of it since I was busy making sure my friend got everything he needed for his computer.

After I get home I called my best friend and he told me what this girl was talking to him about and I realize that she's probably interested in me. Then later that night she called me and we just started talking. And she's been calling me just about every night since she first got my number a couple weeks ago and we would talk for around an hour every night (I've only called her once or twice). I like talking to her and she keeps saying she wants to go do something like see a movie with me but she can't decide on when to go. When I tried to pick a time she just said maybe, if I'm not busy.

So what do you guys make of this situation?
Note that I wrote this at 3am in the morning and some parts of it may not make any sense, and if it doesn't I'll try to clarify it.