The 35-year-old "Jeepers Creepers" star is slated to play the love interest of Faris who is struggling with her alcohol addition, reported Contactmusic.
Created and Produced by Chuck Lorre, the show will premiere on September 23 this year.
Talking about the character, Lorre insists Faris's drinking problem will be highlighted in the show's first few episodes.
While for Long he says, "Doesn't know what he's in for, but he's going to be her first shot for a meaningful relationship."
A special guest appearance by "The Help" actress Octavia Spencer is expected in the initial episodes.