I do not believe that you autoincolulated yourself, no! I think you are way overestimating how contagious herpes is. And I’m a little lost about why this matter so much to you. You have genital HSV 1 infection. YOu either have had it for a long time and the antibody test missed it in your or it missed it in your partner.
Unless you are having sex with your best friend, her herpes has nothing to do with you.