Katie, sweetie, I am SO sorry that you were put through all of this. But, hopefully you should know that you deserve far better than someone who would do these sort of things behind your back. I hope you have all the love and support around you that you need right now (I know you've got it here even though visiting here may be painful for at times)!
As for that other girl, she can be excited all she wants b/c what she's "getting" is a man who obviously has a VERY skewed sense of right/wrong, no respect for women or any sort of real commitment, and will probably lead her down the same path if allowed. He may get MARGINAL praise for speaking up before he went through with it, but that's about it, since he was too much of a coward to fess up to why he couldn't go through with it. (Personally, I don't think a slug has enough slime to equal this guy, but that's not my place... grrrr, anyway.) 
Lots of hugs to you, and here's hoping that some day when you find the guy who deserves you, you'll have an equally supportive batch of brides here to help you along the way.