I've been asked the same question several times and as you know, I write very graphic sexual content, including bdsm. I look at it this way. God created sex, therefore, it is good. My characters are always in a committed relationship and at some time, will be married, or loooooooong term partnered. Let's stick with married. So as long as you're comfortable, then don't worry about it.
I completely get where you’re coming from and do agree that sex was created by God. I do enjoy writing smut and have written it for years. But I don’t want to be disobedient and do something I shouldn’t be, you know? It’s something that I don’t know if God sees as truly bad. Writing smut was never mentioned in the Bible. Haha! So, I’m kinda struggling with knowing if it’s allowed or not.