I'm looking for The movie is not well-known and features lesser-known actors. It's a comedy with a fun tone. between~ 2006-2016

The movie is not well-known and features lesser-known actors.
It's a comedy with a light-hearted and fun tone.
The plot involves a couple who are about to get married and spend time at a house near a lake.
The female character is blonde, and the male character is described as "a little fat."
There is a scene where one character receives oral sex, and the other character's brother sees them through a window while sitting on a couch at sunset.
This confrontation leads to violence, resulting in one brother killing the other with an axe, which gets stuck in the head.
Later, the couple tries to hide the body from an officer or sheriff investigating odd behavior.
Towards the end of the movie, it's revealed that the girl tries to run over someone, possibly the cop, sheriff, or even the mom, leading to a dramatic climax.
The movie concludes with one of the characters, possibly the surviving brother, in a wheelchair by the lake, silently reflecting on the events that transpired.

i once saw it Colombia when i stayed in Bogota in a business trip and looking for it