SgtPepperette I am in the exact same position you're in! I was going to do the "see who's coming" route but decided that no matter who it was it wouldn't have been special to me. Not to say the person isn't special to me, but the scenario of having them standing with me wouldn't have been special. Am I making sense?
Anyways the way I see it, FH is my best friend, my confidante, my soul mate. It has always been us against the world so I think it should be just us standing at the altar the day of.
Do what your heart desires.