My dumb-ass ex works with me now



When I came into work on Monday, the HR person brought around the new people who were just hired to give them a tour of the building and introduce them to everyone. One of them is my ex. We didn't give any indication that we knew each other but obviously we're going to cross paths around the office. He hurt me badly by cheating and then after the break up tried turning people against me. I'm sort of worried his immaturity will spread to this professional environment. I've worked here for years so people know who I am and what I'm about. Should I let people know the deal so that if something does start happening they will have been aware?

Oh my god, I kinda wanna work there to watch this play out! Do you guys, by chance, have one of those popcorn machines that some offices have?