More precisely, the general happy mood is sometimes overshadowed by some fly in the ointment.
Well, thats not a bad option thats what the author probably thought, and accepted this invitation.
The party went great and the original poster was very happy with everything.
Perhaps he was ashamed.
Perhaps he was just very busy with something.
But the fact remains its a bit of a sour situation, as the OP themselves admits.
Nor should they expect to chip in for the chips and dip.
(Having a potluck dinner is totally different.)
Some commenters urge the author to be as petty as the hosts.
And what do you think about this situation?
Check out the results: