But WILL was right!
I get the point of the story: EDWARD never lied like WILL said. He just exagerated things, which is fine. WILL needed to not be so caught up in looking for facts. However, WILL was entitled to be angry. EDWARD was always trying to be the centre of attention. It's fine in campings with all those kids... but his son's wedding? Come on! Not to mention that everytime WILL talked about it, EDWARD would either pretend to be dumb or act like a stubborn kid.
I get that the movie, while ultimately grounded in reality, wanted to feel like a fantasy. That doesn't mean we can't apply real-life logic to the plot. I felt EDWARD crossed the line with the things he did to win over SANDRA.