Dude! You should have listened to Konman and Hardrock! Don't listen to what she says she wants. You basically caved to her and became an emotional mess. She didn't want that! You gave her all the power by showing her you cared more about the relationship than she did. You should have seen the signs by the fact that she was getting more distant and stopped what you were doing! Don't tell a girl you care about her, that means nothing. Show her by being chivalrous as long as it's not at your expense. Don't open up emotionally like that, especially so early on!
Lets talk about the sex thing. You should have banged her right away! There's no such thing as "hard to get". I've never been in a relationship where I didn't have sex with the girl before it started. That's weird to me. Seriously...It should take 4 dates TOPS to get into her pants. If you got her top off and your hand down her pants you are golden my friend. Women take your hand away from "down there" all the time. All that means is that you continue making out and get her even more horny and go back down there. She will let you go back for a little while longer then pull your hand away again. Repeat, repeat, repeat! Sh!t the hottest girl I ever F-closed I worked her up for 3 hours!! I had my hand down there like 15 times before I finally closed!! As long as she's still into it and doesn't say stop you need to continue on my friend. Its like a sh!t test and a anti-slut defense all rolled into one. They don't want to seem easy and they want to see if you can handle it and not cave. You have to read between the lines!
When women say they don't know what they want, that's an excuse to try and "let you down easy". Women are full of excuses because they don't want to "hurt your feelings". In actuality they cause more pain by doing these things because guys communicate differently. The real reason they do this is because they don't want to feel uncomfortable themselves. It would be nice if they were straightforward and told you straight up that they weren't interested but that's not how it works. They won't change, so see it how it is and read between the lines. Learn from your mistakes my friend, there's plenty more out there!