she confided in you. i think you should not say anything.
but if you are undomfortable, you should not see them in the future.

so sorry to hear this.
how do you find emotional fulfillment? from your friendships?
what about intimacy?
this must be so hard.
sorry and good luck!

For me YES!
she blows my mind

For her, NO
She is/was much more experienced than me, and she has longingly discussed prior lovers.