Coworkers

Isn't a rule that if you're new to an office, your coworkers are supposed to take you out to lunch...or at least invite you to join them....or at the very least invite you to place an order when they are having something delivered???  These folks are scandalous....all week long I have not spoken more than 200 words during work hours....which leads to me getting into a mood....which leads to me going home and being quiet....which leads the fiancee into thinking that I'm not happy to finally be home....which leads to both of us being quiet....and though I may want her to stop talking sometimes, it scares me when she's quiet.  It's like very like weird like totally like odd....