So my FI came to me last night saying that his mom's friend won't be able to make it to the wedding so his grandma would like to invite another person. I told him that's not how it works, everytime someone says no we add someone else. He doesn't even know who the lady is that his grandma wants to invite. His parents aren't helping w/ the wedding and are already inviting 20 ppl that neither myself or FI know. Am I being a brat by telling him no more ppl can be added?