She Welcomed Me In

Okay, so here is my horrible confession. One day after coming home late from work, I heard the shower running in the bathroom next to our bedroom. I thought it would be great to get in on a little action with my wife at the moment, so I entered the bathroom. We have a sliding glass door that was foggy from all the steam, and I was already getting turned on. So, I slid the door back and was shocked to find my wife's sister in the shower. She was a little drunk and had planned on spending the night, so she welcomed me into the shower with her. It was the best sex I have ever had in my life, and my wife still doesn't know!

— Jerry, 37