If your wife gets an STD are YOU the one who gave it to her? If you are the one who gave it to her. How the hell did you get it? Are you doing BBFS? If you are. Why? Then are you getting tested regularly? If your not doing BBFS and your clean then just where is she get going to get the STD? If she does get an STD and is NOT cheating herself, then you're already busted. There are more questions that opens an even bigger can of worms, but that comes later.