Did you escalate? If no one escalates then both of you stay stuck in the friend zone FOR-EV-ER. Yes both of you. You're not the only one who feels let down when this happens.
I bet if I got a chance to see what happened I would be able to point out the following....
1. Your converstations are usually pretty patonic. Its a good thing to connect on a personal level but you really need to start flirting with her. If theres no sexual vibe then when you go in for the hand hold she'll feel weird.
- This can be something as simple as saying "Hold on a sec I'm naked. Let me put some clothes on" when she calls you. Of course you'll have to go a lot further than that if you want to make things happen.
2. MORE KINO. Watch videos with Johnny Saviour of Charisma Arts. No one does kino as naturally and skillfully as this guy.
http://www.youtube.com/watch?v=3_C4ELcauk4
http://www.youtube.com/watch?v=MahCltnNB00
http://www.youtube.com/watch?v=5nzhd14saQ8
3. She knows that if she threw herself at you then you would probably f**k her. However she probably doesn't feel like you appreciate her sexuallity on a more individual level. (Yes, she knows you respect her and all that, but you have to make her feel sexy.)
Example: Bad - I like tits
Good - "You have such a sexy walk."
Trust me man, I've been where you are. Theres nothing like falling for a girl thats not sure if she thinks of you as a friend or a potential lover. However given the nature of women she usually sides with having you as a friend. And why? Because you didn't escalate properly.