I had genital warts approx 10 years ago. Recently I had a drunken fling with a colleague. We did not have penetrative sex but did have oral and our genitals touched a few times. To my horror a week later what i thought was a spot on my scrotum turned out to be a tiny wart. I think it was there before my encounter. Both of us are married. What are the chances I have passed this on to her? I know I have to tell her but is it 100% she is now infected?