Alex Rieger is a fictional character from the television series Happy Endings, which aired from 2011 to 2013. He is portrayed by actor Zachary Knighton and is known for his charming and laid-back personality. Alex is a young woman who runs a successful boutique and often finds herself navigating the ups and downs of friendships and relationships within her close-knit group. In the show, Alex is characterized by her humorous and sometimes impulsive nature. She has a complicated romantic history, particularly with her ex-boyfriend Dave, played by Elisha Cuthbert. The series is a comedy that explores themes of love, friendship, and the challenges of adulthood in a lighthearted manner.