Secret Training Session

I'm a personal trainer and I have this thing that's pretty unconventional but totally consensual with one of my clients. We started out as regular sessions in the gym, but then she invited me to her place for something special. She said she wanted some real strength training, not just lifting weights. And boy did we train. We stripped down and I got right into it, pushing and pulling her body in ways that left marks on her skin. We used straps and ropes, giving each other control but also letting go of all inhibitions. It was intense, sweaty, and incredibly hot. Afterwards, she told me how amazing it felt to be pushed like that, not just physically, but emotionally too. I kept my mouth shut with my spouse about this one, and it's been our little secret ever since.