I have a small close knit group of coworkers. One of them is a very picky eater and does not drink. If he attends, he might eat cake and that would be all. He also talks crap about me behind my back. I have no plan to invite him to my wedding, however I am inviting my other coworkers and my boss. I really don't want to spend the money on a guest who A. is two faced and B. won't eat or drink anything. Is it okay not to invite him?