I Shouldn’t Have

My wife is away on business and her sister popped over. Not unusual. I asked if she wished to stay, I was bbq-ing with her saying she would. Well, too many glasses of wine and we ended up in bed fucking like animals. She was really into some intense activity begging me to choke her while fucking! I pretended to and she slapped me and demanded I do it for real. I did the best I could but the harder she struggled the more excited she got to the point of having an intense climax. I came in her, wished I hadn’t. She also while giving me oral, pinched and twisted my testicles and let it be known that her teeth could bite off my dick. She had a determined want to stick her finger in my bunghole. Not happening. She’s a super freak. Now I’m worried that she will let it slip that we got together or worse, want to get together again. No thx.