My girlfriend (who i eventually plan to marry) had been having sex frequently
(oral and intercourse) since the age of 18 with her ex. She has even told me of
the ways, times and how they used to make love and play with each other. I
wanted my first time to be with the special person. I held off all temptations
until I met her.

But now that I know of her past sex life, I feel as though my sacrifice is
worthless. This is really bothering me. And that fact that I haven’t
experienced with other people compounds the agony. I sometimes get turned off when we have sex since thoughts of her previous experiences creeps in and I feel disgusted with her. Recently, I’ve been getting these thoughts even when we
are not having sex.

I have even gone to the extend of cheating on her, but I wound not forgive
myself if I did. I am not someone who would cheat on her. We are also very open and truthful, but I think I will be really hurt her when I talk about this. We
currently have a healthy relationship, which might be be hurt due to such
disturbing thoughts.

Your thoughts on how to approach and overcome this situation will be of
immense help.

Your advice is much appreciated. Thank you.