She follows him around campus and has sometimes become very angry and aggressive to Bob when she sees him with other women. If you observe harassment, be courageous enough to offer to be a witness, or file a complaint yourself as a third party complainant. Remember the receiver of the behavior decides what is welcome or unwelcome. Here are some signs to look for in determining if what your doing is okay or not okay. What you view as humorous may be considered offensive to others.
Caution is advised.
All faculty and staff in positions of authority need to be sensitive to the hazards in personal relationships with students or subordinate employees. When disparities in age or authority are present, questions about professional responsibility and the mutuality of consent to a personal relationship may arise. It will be up to you to prove the situation actually was with mutual consent. Don't laugh at jokes that are degrading or hurtful. Take a stand against behavior that is threatening, intimidating or offensive to you or others.