How to proof you've never been cheating:
Hi, I need some help, I have been in a long relationship with my fiancé, I love him very much, we have been high school sweathearts. In the beginning of our relationship ( we were still in school) I went to the movies with a family friend (we have grown up with each other and only dated for a week-we said it would be better to stay friends) anyway, I went to the movies with him and his friends ( I tought there will be some of his other girly friends) but they were all male friends, well th eproblem comes in that my fiancé thinks that I cheated on him! And that I had intentions... but I mean I was still in school an thought nothing wrong of it for I only went to the movies and to be exact that was more that 5 yeasrs back and we are still struggling with it... AND I NEVER CHEATED ON HIM! I know that what I did in the past was wrong and that I broke the trust etc, and that I have to build it, and I told him that I will and I appologized for everything.. I am really sorry, and I can't take the constant accusing and hurtfull words, the fighting etc...
He is constantly thinking that I cheated on him in the past, and he wants proof that I did not, wich I don't have, I have offered to go for a poligraph test but he doesn't want me to go for it...
I need help, how can I proof to him that I have never never cheated on him!