you know that exist male vtuber there author-san. you can become their stan for a sweet virtual affair revenge. or better yet, become a vtuber yourself and have hundreds of people become your fan.
Better yet, the wife should become a virtual youtuber, but keep it a secret from her husband, get him addicted to her channel, then rip off her virtual mask and reveal IT WAS ME, DIO YOUR WIFE, ALL ALONG!