As Luminis says, you've strayed into the friend zone. Trying to act any further on this isn't going to get you any closer to her, and in all probability, it's going to drive her away. She's going to feel like you've breached her trust.
It's going to be difficult, but while you're friends, she's pretty much going to be off-limits. She trusts you and opens up to you. I don't know how far along the route she is now, but it's easy for girls who open up to boys in that way can feel deceived that they've told you how they feel about people and you've not told her how you feel.
Bottom line is, women don't want good guys, nor do they want the absolute bellends, contrary to popular belief. Women want someone they can change. You're not a boyfriend, or a husband. You're a project. The challenge of moulding you into how she wants you to be is like something out of Disney, it's an irresistable challenge. Have a bit of edge to you. Don't follow her around if you do, be a bit aloof without being hard to get. That's probably your most likely shot at a ticket out of Friendville.
NickysLuckies, take this gold and cash in at the nearest gold exchange. This post ^^ is awesome.
I don't know how much experience you have with females, or how old you are, but i'll tell you a bit of what i've learned from my personal experiences.
It's your life so you should be doing things to better yourself or your situation and to set yourself up for an awesome life ahead. Women come and go, but you're stuck with your life situation for a long, long time - don't get distracted by them to the point that you are neglecting yourself and your friends.
Think of women as a supplement to your lifestyle - sure you may have to compromise a bit to fit them in, but if you make your intentions clear early things usually run smoothly. Ultimately don't let her control you - If you say you're out with the boys tonight, you most definately ARE out with the boys tonight. Don't try to control her, support her in whatever she does - If she knows what you expect of her she will behave accordingly and this will allow you total trust in her - If not this is NOT the girl you have been looking for.
I see too many guys trying to impress girls, or allowing the girl to rule them and dictate when they can do what and with who - not cool. You have the power over your life, so use it well. If you are true on your path and go for what you want with everything you have, women will be drawn into you automatically, as they can see that you have a defined purpose and stability in a pretty uncertain world.
A few other things i've noticed -
Girls seem to use funny little tests to figure you out. If you keep your cool, you have passed. If you pass one test, more will still come, but passing the first makes it likely you will pass everything she can throw at you.
An example of a test -
True story. I was waiting on a cute blonde (had been seeing her for a few months previous) in a semi-swanky cafe - she knew what time we were meeting there, and to contact me if anything went wrong, and as the time ticked by I was getting a little frustrated. By now she was 15 minutes late and still no contact - I went outside and called her, she picked up and said she had got stuck in traffic but was on her way - she would probably take another 10 minutes to arrive.
As I was just about to hang up, I spotted a car similar to hers across the road, so went to have a closer look. Sure enough, it was hers, made evident by the fact she was still sitting in the drivers seat!
I tapped on the window and her face turned to a look of horror as I caught her playing her little games with me. She wound the window down and started frantically apologising, but this was beyond a joke and a pretty serious insult in my opinion.
I calmly reminded her about how I severely dislike poor timekeeping, as it is blatant disregard of how important my time is. I told her the date was off and left. The day after she calls me to apologise, and I tell her i'll maybe consider forgiving her. I'm busy the next couple of days (she knew this) so her calls and messages go unanswered. I get back home and ring her when I get time to check my messages - she has missed me and wants me to go over for the evening to watch a film. I go over and she is clearly expecting 'something' from me, but doesn't get it - Lesson learned? I think so!
Sorry to waffle, but this topic is HUGE. Women aren't THAT complicated but there is a lot of content to cover!
) quite smart and in fact I skipped a grade at school. I never had any issues learning and I could grasp new concepts easily and could think outside the box. Study for me was reading the formulas or a few dot points on a subject.
. And I don't care about age. That's got nothing to do with it. I've already said I had a crush on her. I realize now it wasn't love. 
. I agree with the get lost thing. If the feelings are true then they will stick around longer and being close but just friends will amplify this. What I do in this situation is look for other fish in the sea. I think men know as much about women as women know about men.
