In the show, Lucy's high school friend is Lydia (Natalee Linez). When Lucy breaks up with her high school lover in a very detached manner, Lydia is the first to reassure her that she is not actually frigid but simply expressing herself differently. When Lucy goes to college, the show puts their friendship on hold, focusing instead on her relationship with Stephen and her other college friends. So it comes as a surprise when, at the end of the season, during Bree's engagement party, Lucy and Stephen hold a brief conversation before being joined by Stephen's fiancée, Lydia.
In the novel, Lucy and Stephen reunite at Bree's wedding, and Stephen is engaged, but not to Lydia. Both in the book and the series, the two eventually split up after Stephen realizes he can't use Lucy to further his social-climbing ambitions. They never truly connect for the four years following their college years. So, by the time they finally reunite at Bree's wedding, Stephen has a new fiancée, Jillian, whom he meets after college.
It appears the show's goal is to make everything more personal, and they accomplished this once more by involving yet another person in Lucy and Stephen's drama. However, the show leaves the new development open-ended, with the intention of exploring it further next season.
