Sam Nickel is a highschool friend of Allison who allowed the girl to live with him after she graduated. The two are very close to this day and both have a secret crush on one another. 

Sam can be describe as a goofy and energetic who sometimes lets his emotions for his friends and his obsessions get the best of him. He can act impulsively because of this and Allison had become very skilled in keeping him out of trouble.