A lone wolf like myself, that is gossip and does not have work friends. If it was me, I'd brush it off and move on. I've known people to talk about other people at work behind their back and even had suspension back of people talking about me but I never care about what people say, just forget it and move on. Like my mother told me countless times, if you have nothing nice to say, don't say it at all.
And tomorrow is a new day after he has had time to sleep on it and decide how to deal with me. i'm not one to talk behind backs, which is why i told him to his face that he shouldn't do that again. i'm also true to those who have proven themselves true to me over someone who hasn't. i give a guy a fair shake but the proof is in the pudding.
As for caring what people say, this is my theme song in that regard.....
http://www.youtube.com/watch?v=DPgWNuUkuA8
As for dealing with it at work, i went to my supervisor with a concern (even though light-heartedly). That puts me in the legal "right" in the workplace. Technically, i just became a "protected employee" per whistle-blower laws. NEVER a bad thing imo. Cya. NOW, if it continues, i will complain formally and strongly and if it isn't addressed EFFECTIVELY i will be in a "hostile work environment fostered by the employer". You make your discomfort known to enough people and they become witnesses to the truth.
i would NEVER ask anyone to lie for me but if they are privy to the facts and i need them to witness on my behalf then it is in my best interest to shoot straight from the hip with them.
As for "nothing nice to say", i TRY to follow that rule but in the end, the truth is the truth. i'll take truth over "kindness" any day.