One of our groomsmen is truly single, and would like to bring his mother to the wedding since she is close to FI. So.. by etiquette, since she is this GM guest, does she need to sit at the head table with the rest of the bridal party? I feel like that's a little strange, sitting there with everyone who's a husband and wife and you have your mom next to you, but FI thinks it would be fine to sit her near his parents (despite never having really talked). What would you do in this situation?