Ok, I received a Save the date for a friend (not a close friend) a couple of months ago for her wedding in mid-July.
I was at my sister's the other day and noticed she had an actual invitation on her fridge. I told her I got a STD but no invite and she told me she received an invite but had never gotten an STD.
People mix my siblings and I up occasionally, but I don't think that's what happened because the bride specifically messaged me for my address on FB and my sister and I have different last names now.
I don't know if I should say something (maybe it really was lost?) or just wait and see if I receive one?