2015-17 movie help!

Alright, so i saw a movie a while ago, and i cant remember the name of it. I think it was from maybe 2015-17. The plot goes: A bunch of high school friends decides to have a kind of reunion in one of the characters houses. This character (i think) was some sort of sportsman. In the hall, there are pictures (close ups) of each friend. One of the friends is a murderer, who kills almost everybody there because they used to bully a kid in highschool, and this kid almost committed suicide by jumping off of a bridge, but the murderer stopped him and they plotted this whole murder scheme.

Your description sounds a lot like All the Boys Love Mandy Lane, but that film was released in 2006.