Most of these diseases are spread by extended skin-to-skin contact and by the exchange of bodily fluids. Likewise the husband does not have authority over his own body, but the wife does. If the Bible proscribes it, it would have to be by principle and not by an explicit command. We get a lot of questions about relationships, dating, marriage, and of course sex. Marriage is no guarantee. Alright, thank you Pastor John.
Is it for pure sexual pleasure or is it to fulfill a sexual fantasy derived from porn?
There is an answer to a previous question that I would like you to examine because it takes your question a step further: Emotionally not physically haha. Some of us are beef eaters, some of us eat a bunch of tofu and beans. When the husband or the wife does not feel that sex is a "beautiful expression of love," then changes need to be made in that couple's sex life. One of the best essays I've read on sexual history in Christianity. Her way of interpreting the Bible is not systematic, for example, and she tends to feel her way through the text.