OK, first... you never get them back - not the way it was before. People grow and move on, and at that age, it happens often. You need to accept and cope with rejection no matter what or with whom. None of us like rejection, but it is part of life and we have to learn to deal with it in many aspects.
Go to the relationships section and read the first four stickies there. You'll notice that you are not the only one this has happened to and that you will not be the last. We've all been there, done that and survived. And, I promise, you will survive this too.
You might think this is not the usual 'crush' and that this one is 'meant to be', but you have to remember it takes two to think in the same way and she has moved on to living her life without the stress that you two had. Accept this and gain her trust and friendship back... but don't expect anything further unless she is willing to give you another chance at more.
If you keep on trying to convince her that you have changed, and bother her, you will 'push' her away so leave her alone until she is ready to contact you.
Once a girl decides to leave a relationship she means it, seriously, and there is nothing you can do to change that. The best you can do now is maintain friendship with her, but at her pace - so leave her the space and time to like you again and don't push it. Be cordial, friendly, and don't start with the jealousy bit - that and drinking are the worst enemies of friendships and partnerships, so please keep that foremost in your mind.
The only one you can change is yourself. You also learned a lesson about what NOT to do when your are with a partner, remember that lesson so that it does not happen again.
Alcohol can ruin a lot of things in a relationship and also in your body and mind. I'm an alcoholic (dry for over 20 years) and glad that I don't drink any more. It changed my health, personality, and drove a few very good people away.. so if you can, please get off the juice and stay off. It is not really 'cool' to get drunk, costs a lot and shows others that you are weak and not in control of yourself. Find out the reason you have for getting drunk, work on it and become your own boss. Get your self-respect back and set some better goals to reach.
Now, after reading that you want to hear it from her own mouth.. she already told you and friends that she does not want to go through it again... isn't that enough of a message?
Also, your promise that she will never 'see this side of you' again is a promise that you cannot even make to yourself, let alone to anyone else right now. I bet that if she told you face-to-face that it is over, the first thing you'd probably do is get drunk. So stop making promises you cannot keep. Be realistic and face life as it comes and cope with it as best as you can. That's all we humans can do. Some things in life are harder than others, but we all go through them and have to deal with them as they come. That is what makes us mature and grow stronger, or it drives us to self-destruction because some of us cannot get off the pity-pot. Which are you going to do? Grow or sink deeper in self-pity? It's your choice dear, and I sincerely hope you make the right one.
As
Starbuck8 and
Altenweg said, do it for
you and be calm about it! We all have that initial fear of rejection, but we also have to learn how to stand up and deal with it - it's all part of our being human and we have to overcome this fear. It gets easier and easier down the road once you've learned how the first time.
So again, it's your decision as to how you deal with that fear - but at least you'll know where you stand and can go on from there.
What's this 'pulling out all the stops'?? This is no game, you have to go along with your feelings and also her reactions... so don't plan this like in a stupid TV show... this is real life and there are no guarantees. Again, keep a cool head on your shoulder and if she says no - so what, deal with it.
Believe me, we've all been there. Again, I sincerely hope you get over your fears and accept that friendships are just as important as relationships at your age.
Good luck dear, and keep us updated.