First of all, communication is key. Couples should communicate openly about boundaries and respect for each other. For example, they can have a serious talk about what is acceptable and unacceptable behavior in the relationship.
I'm not sure specifically what this 'the crowd groped my wife story' is about without more context. It could be a very concerning and inappropriate situation if it involves actual groping, which is unacceptable behavior.
There was a wife, Jane, who was at a fair. As she was walking through the crowded lanes, she felt an inappropriate touch. She turned around and saw a drunken man. Without hesitation, she slapped the man across the face. Her action attracted the attention of the fair staff. They quickly removed the man. Jane's experience was scary, but she was glad she was able to defend herself.
No. Groping is a form of sexual harassment and is not an appropriate or ethical topic for an erotic story. Erotic stories should be based on consensual and respectful sexual interactions.
No. Writing or sharing such content is inappropriate and often unethical. It involves sexual and inappropriate themes that can make others uncomfortable and violate moral and social norms.
First, make sure your wife is okay physically and emotionally. Comfort her. Then, if possible, try to identify the person who did it. You should report the incident to the concert staff or security immediately. They can take steps to find the perpetrator and ensure the safety of all concert - goers.