Sorry that happened to you. Cut her loose, cease all communications, and destroy any memories is all I can say.

Hopefully you can get a refund on the ring.

Been there done that and take it from and old guy like me, what your mostly feeling right now will eventually pass until it just becomes a memory and somewhere in your later years, you won't know why you were feeling so distress about it as you are now. Yes I know it's hard to see that right now, but it's true.

Here's another thing, find somebody else again. But don't rush into the relationship when you do find somebody else, take it slow and don't use them as a rebound or crutch. Don't complain or talk to your new girlfriend about your ex, most woman (men too) don't like that and will think you haven't gotten over her, which is the thing you want to do. Right? And then you'll start forgetting about the other woman soon enough, not totally - mind you, but enough to get you through the emotions you are feeling right now and not think about her anymore.

Just my 2 cents from an old guy who's been there and gotten over long term relationships that went bust.  

Just read this now, way after you posted this. Damn.

Hope you are doing better now that some time has passed.

My sympathies man... 

Been there a few times, keep in contact with your friends and family and Stay busy, keep moving, fix , clean, make stuff , do it all day till you too exhausted to stay awake. That's how i coped it last time on advice from a friend.

Jeez! I just saw this, I hope your doing better now.

A quote of Kreia: "Apathy is death" oh, and my apologizes at me the girl didn't wanted have a parship, cuz i asked her, when we was neutral to each other