Some of my colleagues have just all got up and gone to lunch and haven't invited me.
As far as I am aware we all get along and on days where I have a lunch break have been with them often. I think they haven't even noticed I am here today as no one has even said good morning to me.
They all sit on desks on the other side of the office to me. Does that mean I don't exist? Or maybe they just don't like me?
Do you think it is rude that they haven't invited me or should I not expect this just because they are my colleagues?