<human>: Just came home from university for the summer, and at first I struggled to find a job. Because of this, I went to a previous employer who is giving me some work.

Problem is, I have been assigned to work in a different department and one of the part time managers is a guy that my ex cheated on me with, and at that time I pushed her out of my life and did not confront him or say anything. Now that I will be forced to interact and work with him, how should I go about this? I don't like the guy obviously but I need to get through the summer and get some cash. Any tips or anyone who has gone through something similar?

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: Have to work with a guy my ex cheated on me with, how should I act around him when I do need to work with him