I work part-time in an office, I'm in two days a week. Yesterday the other three people in my team (we all sit near each other) went for lunch without asking if I wanted to join them. There was an awkward moment while I was queuing at the canteen and they were all sitting there having their lunch. Then in the afternoon, all of a sudden they all get up at the same time and head for a coffee. Obviously they'd all sent an email to each other (again not inviting me). I felt quite upset the whole day and I know it's maybe childish but I left without saying goodbye. The thing is that we normally all get on and I can honestly say that I have done nothing to deserve this. Two of the guys can be quite gossipy and even bitchy sometimes but still. It doesn't feel good to be excluded like that.