Sounds a bit like.....
The excellent, but very sad Festen
http://www.imdb.com/title/tt0154420/
Exactly what I first thought also. Loved Festen (The Celebration) .. movie and play and wondering if I should add this to my possible picks for Toronto FF.
shareWhen I read the name I thought it was a US version of hit UK- comedy Peep Show!!
Even the POV camera on the IMDb main page is of the ilk of that show.
Synopsis is remarkably like Festen, but I suppose any film that involves revealing a "dark secret" at a public gathering will always be subject to that comparison.