I'm struggling with whether or not to invite my co-workers. I work in a department with 8 other people, which I would all invite with a guest as they're all married or dating someone serious (so 16 people). We're already way over our number of people we wanted to invite to begin with. BUT, one of the co-workers is getting married next month and I just got invited to his wedding. Now I feel like I have to invite him and if I do that, I'll have to invite everybody else in the department. Thoughts? Advice? Thanks!