does not believe her, she kisses him to convince him it is true. They end up on the bed with Casey naked and Alison in her underwear, but she pulls away and gets out of bed before they can have sex. She says she does not want to sleep with him while lying to him. Casey expresses disappointment that she is keeping secrets from him. Alison promises to tell him the truth when the time is right, and they part amicably. Maddie, who had to stop at her brother Henry's hotel room to get her cell phone, hears Casey and Alison together in the room. She later meets Casey downstairs and, crying, tells him she knows he is sleeping with Alison. Days later, Casey approaches Maddie at Al's Diner and apologizes for hurting her, then tries to convince her that nothing happened between him and Alison. Maddie is angry and irrational and refuses to hear it, convinced that Casey has a thing for Alison. Later Casey meets Alison at the park and tells her that him and Maddie are not right for each other because he is not good enough for her. He also expresses a desire to start a relationship with Ali. Alison is afraid of having a relationship with Casey and insists that he gets back together with Maddie. She approaches Maddie outside Al's Diner and tells her she and Casey are just friends. Maddie is not convinced and walks away. Alison then tells Casey that what happened on New Year's Eve meant nothing. Casey is clearly hurt by this but lets it go. Later Alison and Casey scheme to get their broken-up friends, Luke and Noah, back together. Alison approaches Luke and claims that she is unsure whether Casey likes her as more than a friend, then asks him to speak to Casey for her and find out. Casey approaches Noah with the same issue, and they lure the couple to the hospital's roof and lock them out. While they are waiting for Luke and Noah to reconcile, Casey reveals some acquired maturity, claiming that he is seeking a substantial relationship rather than a brief fling. Alison responds skeptically but is intrigued by this change of attitude and shows more willingness to take a chance with him. Alison and Casey dated briefly, breaking up when Emily's computer technician, Hunter, who had an obvious crush on Ali, drove