How can i get her back? im drinkin now shes gone...?

my girlfriend told me just the other day that she didnt want to be with me anymore because she didn't want to hurt anyone any more... i mean what the hell dont want to hurt anyone? who have you been hurtin? i havent done anything to make her upset. we were happy and she was the first girl i really ever loved, **** sucks... since then i went out and blew $120.00 on vodka. and i can't get her off my mind... i want her back so bad... im affraid that she will not understand hom much i love her... and thats why im drinking so much... please can anyone help me try to find a way to get her back?