She should have confessed everything at the onset rather than after you found out. This kind of honesty is a foundation of strong long term relationship; somehow she failed to show that. Of course two months is a very short span for such bold confession but when you have asked once (she should have confessed at that time but she did not) and then you found out untold things is little disturbing. This gives me a feeling of manipulative nature that she might have. If you can digest this, then go ahead.