Probly cuz NOONE wants U
Love is something that develops between any two souls and thus the attachment which is the marriage... so your friend was part of you until yesterday... and now she is gone.. its kinda love lost ... The same things happens between wedded couples where one feels ignore or left behind, when the other has found another one.
you need to careful as this is the time as this is where jealousy/ possessiveness may creep in and you may try to get your friend back or pull up a fight with her.
All you need to do is start meeting new people, change your activity schedule and get occupied in some way so you don't feel the time.
English or no reply.
I'm sure it is hard. And one of those things you can't force yourself to "get over".