Help with my girlfriend

I have been with my beautiful girlfriend for over 2 years. I show her affection and love like no other. She wakes to sweet text messages of affectionate posts to Facebook everyday. There is not a day that goes by that she does not know how I feel or how much I love her. I don't get the same in return and it frustrates me and we fight about it. She says "is the love I show you not enough." It's never been about that. Just that extra I need. Anyway to my question. I messed up really bad. I sent her sweet messages and and she never responded. I asked her why and she said she hadn't got around to it yet. I was upset and she started yelling and made me feel like I was showing her too much attention and affection and smothering her with it. I became very upset and hurt and I left and started drinking. So much that I don't remember any of the night. I came home and she took my phone while I slept and apparently I texted her sister in law, (her best friend) and expressed how sad I was. She gave me encouraging advice and told me I was a great guy and handsome and I deserved to be treated better. I responded in drunken anger and again I don't remember any of this. But I said I hated my girlfriend I didn't really want to be with her anymore and I wished I met her (girlfriends sister in law) earlier and not my girlfriend and I shoulda been with her. She left me. Won't talk to me except to say never talk to her again. I obviously didn't mean those things, how do I get her back. Help. I messed up. I know. It wasn't physical but it's still hurtful. I understand. I've written letters and poems and tried to communicate and told her I was sorry and I would fix this and make it up and earn her trust back. But she won't talk to me. What do I do.

I'm sorry to say but the boat has sailed, because shes gone & read as much info she needed to get to know everything i don't see her coming back for explanations... In a way shes doing you a favor by leaving you for your own good & shes right your too much with your poems & stuff i can imagine how annoying it would be for her, in future yes its cute do it but not every single day morning & night. You need to tone that stuff right down. your too soft you need to harden a little, girls normally do that & i know your only trying to show her how much you care about her but too much is enough to push anyone away especially coming from a guy. no offence (but it can be a put off) your too sensitive I hope you can learn from what you did, too much & too less is enough to push someone away, you need to balance it 50/50 & you should be ok