Concert Cumming

I went to an outdoor concert. The stadium was packed. The main act came out and started playing. I noticed the woman in front of me was swaying back and forth to the music with her husband. She kept bumping against me and turning around and smiling. After a few songs she reached back and placed her hand on my crotch. I unzipped my fly and pulled out my already erect cock. She started stroking it to the beat of the music and dancing at the same time. I couldn't hold back any longer and exploded in her hand and all over the guy in front of me.
She just turned and smiled. After the concert had ended everyone was leaving and the crowd was moving along slowly to the exits. Her husband was walking ahead of her and I was behind. She turned and said, 'That was a really good show. Did you like it?'
I said it was awesome and wouldn't mind 'cumming'
again sometime. She said she had fun and wanted to do it again. When I got home that night I masterbated to the CD of the same band and smiled.