From page 1.
What your husband does with how girlfriend isn't your business. What you said about STDs has no relevance to this issue whatsoever. Wear condoms with other people is a reasonable rule, not don't go where I don't want you to. He's an idiot for agreeing, but I know that people who are consistently were down by controlling and possessive partners end up agreeing to do things that they have no intention of sticking to just to shut them up. Let them do what they want to do, you let your morals and sex negativity dictate your sex life, not impede on anyone else's.