French Film LOVE at FIRST FIGHT-Survivalist Romance Blossoms

Boy meets girl in a wrestling match.  Girl brings him down and he resorts to biting her arm.  Not a whole lot of charm in that or in the entire film for that matter.  Madeline (Adele Haenel "In the Name of My Daughter) plays the militant ingenue preparing for an apocolyptic future by enlisting in the French army to hone her survivalist skills.  Arnaud is the young man who needs a muzzle. Why he becomes so besotted with Madeline that he enlists remains a puzzle.  Does love blossom or do fists prevail?  Madeline's angry with the world mentality does soften as Arnaud's combat/leadership skills harden.  A shrinking violet or Pvt. Benjamin she is not, but still, she's pretty hot.  Her disdain for any signs of weakness gets weary.  Arnaud must have been infected when he bit her cause he goes a wall from the army to set up housekeeping with her in the forest.  Survival means adaptation and Madeline grows accostumed to his face.  Too bad they can't survive without the human race.  Oh blah di oh blah dah, this movie is merely comme ci comme ca.