Mentally accepting girlfriend's past

It is difficult in any relationship to accept that our partners have experienced certain situations and that they have already shared something with someone. It can be disturbing to bring the past to the present and I agree that it can cause many issues to a relationship to have a continuance reminder of prior actions and it definitely would be preferred to be left under the sand as it is history.... unfortunately there are moments where some people want to share with there partners their experiences in belief that it will bring them closer in trust with implication that they do not hold any truths from their partner... ..my opinion not necessary to give it unless it was a traumatic situation that you would not like for it to be repeated...or has caused some kind of change to you. If you truly care about the person whom you are speaking of simply speak to her on good terms on the reasoning behind why you truly would prefer to not be expressed all those types of experiences as they are part of her past and can damage the present as you are a visual person. Be honest with her in hope that she will comprehend your side and be able to see your view point on the issue... communication is very important and at times if your side is not expressed on how you feel than it can be assumed to be other reasons... by the other partner.