Everything was fine until I opened my big mouth again, confronted her on lying by not telling me who she was meeting up with every day at school. Which wouldn't be a big deal if she didn't lie about things just to avoid arguments. Well now she's cold and she talks to me in this cold hearted tone no matter how nice I am when I try to tell her how I feel. Emotionally I feel like she's vanished overnight. Literally. How do I get it back and why has this happened? I never have given up, why is she? She never comes to me and tells me these things, she waits until she's had enough before we communicate. If she would tell me what's on her mind more, maybe I could fix a lot of things. How do I get her to open up?

"Everything was fine until i opened my big mouth again"
Obviously she never turned on your over night! Your repeatly annoying her, and she just finally had enough! She will not open up to you, because you seem to be a very jealous controlling guy. She doesn't think you can handle the truth and will just get jealous and angry. FOR her to change her ways, you would have to change first.
Otherwise you guys will never work. And you don't trust her, so you will never get over your controlling ways. So just move on, and work on yourself.

By you making an argument about who she is meeting up with proves the reason why she hid it. Cause she knows you are going to make a huge deal about it. You keep suffocating her trying to make her show affection. Maybe she needs a break and is annoyed of the way you deal with things and the way you act upon situations. You need to work on your trust issues with each other before you guys can go back to the way you were or take the next step.

This is an old thread, but typical of not having the patience, or the trust, to not bombard, or overwhelm your partner with your fear, and insecurities.

Not everything needs fixing, and to fix things you have to have the tools. That's TALKING and LISTENING with an open mind, and NOT an open mouth.

A lot more can be fixed when you know when to shut up!

Don't go all crazy on her, I've made that mistake. Just slow down right now.