My fiancée with whom I've supposedly been in a monogamous relationship with for almost seven years recently tested positive for HSV2. She was tested because of an unidentifed sore on her butt cheek. She says she was tested immediately before we met and was negative. What are the odds, or percentage chance, that she had this without knowing since before we met? In other words what is the chance that she got this since we met. I've been tested twice since she came up positive and I am clean.