The title translates to "Love's A Bitch". Appropriate for a downbeat movie set in Mexico City that loosely links three storylines of love and tragic loss. The opening storyline is particularly violent and immediately gets you involved. All three stories are intense and well paced. The acting and filming is all good. If you like pain, this is a movie for you.
However, I found the movie quite fragmented as it tried to weave between storylines without adequately bringing them together by the end. It's confusing and lacks integration as you shift gears when the story switches. The thesis is that "you are also what you have lost" and all the main characters suffer loss of one kind or another. It's the antithesis of most Hollywood films by leaving you drained and depressed at the end.
Warning: the brutal dog fighting scenes might be upsetting.