In my brief time writing BDSM, I've learned that there are readers who accept insta-play scenarios, and those who don't. By insta-play, I mean characters who get kinky very early in their relationship, maybe even before they really know one another. In real life I know that this could potentially be dangerous. You don't just meet someone and jump into doing BDSM. It's much safer if you get to know the person you'll be playing with first, negotiate, discuss limits, make sure they are clean, learn if you're even compatible and so on.
In erotic fiction some of that may be a bit glossed over and characters may get together much faster than would happen in the real world. As authors, we're told by our editors and publishers that sex needs to happen early in the story to keep readers engaged. This is where the problem often lies with writing believable BDSM relationships. The great thing about erotic fiction is that it's based on fantasy and you can get away with things in fiction you can't in the real world. Or so you might think. Some readers are willing to go along with the fantasy and others, not so much.
In my book Wrapped Around Your Finger, Banner and Indie get down to business after only knowing each other for very short time. I tried to make this quick relationship as palatable as possible. They negotiate beforehand, have already been tested due to their employment and Indie has a person she uses as a safe call. Even with all this in place, I still received some criticism for the relationship happening too fast.
I've read and enjoyed stories where time was taken to built a relationship and others when it's been more of an instant connection.
As a reader or a writer, what are your thoughts?