I have a large family and a lot of family friends. My fiance has almost no extended family and his family doesn't have many family friends. My father is also paying for our wedding so anyone he wants us to invite is getting invited (so far they've all been family friends).
My fiance isn't worried that our sides are so uneven, but yesterday his mother made a snarky comment as to "if there's going to be anyone there she even knows". (The answer to that question is 'of course').
There's no one that he's wanted to invite that we haven't invited.
What does your guest list look like? I've heard it's pretty typical for the bride to have a lot more guests than the groom.