Before you pour out your heart, give yourself a chance for the shock and emotion to die down. However long that takes is up to you, but you need to be on a solid emotional ground to approach this in a positive way, and the best way is to be calm, and in control of yourself. I suspect you have a lot invested in her, and that may not be healthy, or attractive, as you appear to need her to make you happy. Give it time to get your confidence, and self esteem back, before you try getting her back.
Well my friend told me she didn't want nothing to do with me and felt like I never wanted her in my life again but she has another shoulder to lean on that really tore my whole world up.
Doesn't sound like there is much of a point to trying to talk to her. So get your act together first, and when your happy with yourself again, then you can consider your next step.