Reputation will stick with you more closely in a workplace setting. If I get the reputation as being difficult to work with then advancing or moving laterally in my organization will be extremely unlikely.
Over the past summer, I had shown an intern on my team, who had similar interests as myself, a few of my favorite spots in my area where these interests are celebrated. He seemed like an interesting person and I wanted to show him some of the better attractions in my area while he was visiting.
As time passed, and we continued to interact, it slowly became obvious through his actions and comments that he is not a person I want to associate with in a personal setting.
At the end of his internship he went back to his university and it seemed he would turn down the offer my company had given him. He has now instead accepted this offer.
I have changed teams recently but still work in the same building. I would like to end our personal relationship with the least amount of damage possible to the professional relationship and my career as a whole, but I do not know how to go about doing this.