A good friend of mine had a relationship with a guy that went sour eventually. They were a loving couple or at least it looked that way on the surface. I learned about kinky behavior from them because she loved being submissive for her boyfriend and telling me about the things they were doing. I was as vanilla as could be when I was hearing about it from her. It was very exciting. And from what she described even though he was really dominant with her in bed it was apparently consensual.
Years into the relationship out of the blue the guy lost his damn mind and for some unknown reason he decided to intentionally strangle her to death. She’s now dead and he’s serving a life sentence in prison for what he had done. He confessed that he killed her on purpose. I know I shouldn’t still think of their sex life. But I do.
Their kinkiness feels so much more extreme considering in the end he actually murdered her. It makes all the little adorable submissive things she did with him even that much more submissive in hindsight.