Today I have an idea of the partner I'd like to play with, and a few ideas about the scene will play out. So for the easy part - you're my sister-in-law who happens to be chubby. It's a pairing and a body type I enjoy, that I don't get to play with very often. I'm open to you being older, younger, or twins, and I'm also open to you being a variety of races, should you want to include raceplay.

As for how it happens, I have a couple ideas...

Secret Attraction

You live near your sister and I, and so we see you all the time. It's uncommon for a week to go by without us grabbing dinner or drinks together at least once. As a result, you and I have become close friends, even outside the context of our in-law relationship. One week my wife is out of town, traveling for work, but you still come by to hang out with me. After a few drinks we start to get a little flirty, and before we know it, the inevitable is happening...

The Agreement

My wife and I have a fantastic relationship in most respects. We're best friends, we always laugh together, and we have a deep, well-earned trust. The only thing that's lacking is sex. My wife has either come to realize that she's asexual, or she is sexual, but she's very averse to a kink that she knows I have. Despite this, she wants all of my needs to be fulfilled, and so she comes up with an idea. She asks you, her sister, if you'd be interested in helping out with my needs. Almost instantly, you agree, loving the taboo of the situation and always being willing to help your sister.

Both ideas are pretty rough, but give us a good starting place to discuss a scene. As stated above, feel free to come at me with your own ideas as well. If you do respond, please let me know which scene you'd like, any initial ideas you have for it, and what your general kinks/limits are. Feel free to check out past prompts as well. My profile has more in-depth information about my kinks, limits, schedule, and style. Hope to hear from you!