The lover who broke up went to the company and then went to the community. What should I do?

There is no need to fight back. If you quarrel with him, you will definitely see a lot of people, which will have a bad influence on yourself. If he bothers you and ignores him, ask the company security to ask him out, it is estimated that he will be annoyed. If you continue to make trouble and affect the normal working order of the company, you can also call the police. There are many ways to deal with him, but you can't argue with him directly. If you ignore him, he may give up