I have started a new job and I'm the first person they have hired (upfront) in 15 years. I am replacing a person who had been here that long. My concern is they don't talk to me. They do not act interested in getting to know me. They all go places together at lunch and I am not invited. I have tried to talk to them and associate with them but sometimes I get the cold shoulder. It bothers me. I always end up standing there and feeling left out.