In a recent episode of the TV show Young Sheldon, there are hints that George may have an affair with Brenda. The episode highlights Mary's feelings for Pastor Rob when she witnesses him on a date with another woman.
Brenda, who happens to work at the same bowling alley as George, could potentially use this information to create conflict between George and Mary. By taking advantage of their marital issues, Brenda may have a conniving reason to start an affair with George.