So a friend invited three families (we are one of them) to dinner by a group text sent on a Friday for a Sunday dinner. He heard from two families, but not the third (me). On Sunday about two hours before dinner, he texted the group again asking if we were coming to dinner. No response. Once at dinner, he texted my daughter directly to find out where we were. When she told him we weren't included on the group text and have no idea what he's talking about, we never heard a thing back. I'm told from others that were there that he realized he forgot to include us on the invitation, but 5 days later we have received no apology or anything. I reached out to say that since I always respond to his texts within the hour that I would have never blown off an invitation. Still nothing. The text from me was read. What kind of person doesn't apologize for that? I'm wasn't mad as it was an honest mistake but to not apologize just seems rude AF. Opinions?