Hello- I have been with my wife since we were both 18. We are each others first and only sexual partners. However, 5 years ago I foolishly had protected anal sex with someone else. I made sure I used a condom and since the have been tested multiple times and received negative results. However I have the following questions:

Welcome to our Forum.  Thanks for your questions.  I'll be glad to comment.  HPV infections are, for the vast majority of persons who acquire them, innocuous infections which resolve without consequences within a year or two after acquisition.  I would not be worried- the likelihood of infection following a single exposure is low and your wife has already had a normal PAP smear without evidence of infection.  New evidence of infection is unlikely to appear since her last evaluation.  In response to your questions:---