BG: Neither of my parents are close with their siblings, so subsequently I am not close with any of my cousins. I have never met the cousins on my Mom's side, and the cousins on my Dad's side are about 10 years older than me (I think I have met them about 6 times in my life; the most recent was when I was 14).
My cousin has been engaged for awhile and she asked for my and my siblings addresses so she could send us invitations. She congratulated me via facebook when I got engaged last November and offered to send me everyone's addresses since she already has them.
I got my invitation in the mail last week and she only invited me (not FI). I'm a bit upset because we had been engaged for almost 2 months before she sent out the invitations so she could have included him; and she could see on Facebook that we were dating before that (it's not like she didn't have time to add someone to her guest list). I live near DC and her wedding is in Denver, so we probably wouldn't have attended anyway; but there's no way I'm attending my myself (I can't afford it and it doesn't sound fun at all).
I feel bad declining because she offered to send me the addresses, etc. Am I being rude?