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So in conclusion it seems that we agree that the past is the past. Very little good can come from knowing this information. I think however, this line of questioning from her opens a bigger issue that he will have to acknowledge, namely her potential insecurity.
Not that my partner would ask, but it has made me wonder what she would make of my past and made me wonder if the way I regard her would change if she had an extremely high or low number. So best not go there, we are very happy!