To make a very long story short, one of my little sisters from my sorority and I have a very hot and cold relationship. Half the time she loves me, and the other half she hates me for no reason. I usually end up not even realizing she's mad until she's told most of our mutual friends what a horrible person I am for doing xyz. When she's nice though, we get along really well.
She's moving about 7 hours away for grad school, and recently posted on my facebook "Please send my save the date to 'Little and Guest' to this address". Ok, thanks for the updated mailing address, but 1) who says you're invited? and 2) who says I'm nice enough to invite you with a guest? In the years that I've known her she's never had a boyfriend, so why would she assume she'd get a date to my wedding?
I'm kind of at the point where I don't even want to invite her to the wedding since she's so rude. I'm fairly certain she won't get a STD just because I don't want to get locked in to having her there when she could go totally BSC over the next year. What would you do?