What should I do if I encounter female mental illness? I pester my boyfriend every day, call my cell phone every day, call the office if I don't answer it, or go home and wait downstairs. That's all.

Make sure you are crazy first, because you don't usually pester your boyfriend for no reason. Find out the origin of this man. If you are sure it is someone you don't know or who has nothing to do with your boyfriend, you can contact the community security or company security to drive away. If not, please ask the public security to intervene. If there is no problem, it is easy to solve, but if it is caused by a boyfriend, you must clear your mind, and you must tie the bell. So do a detailed investigation. Find out the cause of the problem and solve it in time.