Plain and simple.. There is someone else in the picture.
Bank on it.

You should know better after having gone through this once before... There WAS someone else in the picture back then and you can bet your last dollar there is someone else again. You obviously are falling for the same lies again this time..

Wake up.. Do your homework.. There is someone else in the picture. This is how women act when they have someone else that they are interested in. Suddenly you can do no right. Suddenly there is nothing you can do to save the relationship. If there wasn't someone else she would be open to working things out.