Only a few details

There are only a few things that I can remember about this film…
One important tip is a scene that develops in what I recall is a wedding, and after a while the movie goes back to the same scene but this time from the point of view of another character, I beleive this happends several times… in one of them, the camera shows the actors’s reaction from under the table.

Other thing I can remember is a situation that happends in a bedroom with the protagonist and another man, I don’t know if they are Friends or not, but after that, later in the movie, the man says something like this: Because of you I almost become gay.

Sorry my English.

Thanks.