Hi i think you need to spend some time thinking about the fall out here.Even if you havnt sent std etc.If you had spoken to me about attending and then said no you cant come i would forgive you as that is what friends do however i may not forget. it could come back and bite you in the bum later.i think you need to give yourselves time you may be able to work things out with her.how far away is the wedding?i would try and sleep on it you may regret your decisions time is a great healer.the other thing you might want to think about is has her actions made you verbalize your uncertanty about having everyone there ,are you now using the fight with your friend as a way to avoid the plans you had set.i know from experience that after a good nights sleep things dont seem so bad in the morning. friendships change you may have had to learn the hard way.you have obviously been hurt by her but try and be bigger than her and even if you cant let it go remain friends but dont put yourself in the position to get hurt again by her.anger and bitterness create lines on your face, hey you need to look pretty on your wedding day. take a deep breath and think and count to 200 if need be, hug your h2b and smile you have lots to look forwards to.hope that helps xx