There's two that always get my hubby going. First is how I hooked up with a much older man about two months before he and I got together. Now my husband and this guy almost got into an altercation and my husband backed down. I don't think any less of my husband because of that, but yes he was more intimidating then my husband. Former kickboxer, well built etc. I think my husband likes that he cowered to a more alpha male so to speak. We discussed this guy as a potential bull and I reached out to him but he was weird about it and I just didn't like the vibe.
The other is the fact that I had group sex with my sister, we hosted a few guys. No, we did not fool around with each other.