Well they didn't come right out and say it like that, but they did ask if they were invited to my shower.
So one of my best friends from my childhood just sent me a message asking if her mom could come to my shower (that my friend is throwing me). I know that if I say yes invite her to the shower then I am obligated to invite her to the wedding. I'm not sure if she would come; but it just opens the door to why I didn't invite all my other childhood friends parents to the wedding. I feel bad, because this friend invited my parents to her wedding (and my mom to her shower). My mom declined both but did send a nice gift for the wedding.
But if I was going to invite more people to the wedding I would probably invite FI's coworkers because we are friends and play tennis with many of them outside of work. We decided to cut the line whenever it got messy and thought people may start to get their feelings hurt, like if we invite one co-worker but not another. I feel bad about saying "no" but at the same time, I really don't want to invite them to my wedding.
I guess it was bound to happen sooner than later!