<P> Cate miscarried her child with Ryan because of a condition she developed after having Lux . Lux being the only child she would ever have created a stronger bond between mother and daughter, and Lux finally realizes that she has a real mom who loves her and won't let anything or anyone harm her . After nearly giving in to desire, Baze breaks up with Emma after learning from Lux that Emma had had an affair with his dad . It didn't happen when Baze was going out with her, but it meant his dad cheating on his mother, and he decided that he could never be with Emma without thinking of his father . </P> <P> The show then fast - forwards two years to Lux delivering the commencement speech at her graduation . It is revealed that Ryan and Julia are together and have a young son from their affair, and that Baze and Cate are finally together as a couple . Math and Alice are married and expecting . Jones also kisses Lux, revealing that they end up together, and Tasha is seen happy for them . Lux and Tasha prepare for college together . At the end, the family and friends take a photo together . </P> <Ul> <Li> Britt Robertson as Lux Cassidy </Li> <Li> Shiri Appleby as Cate Cassidy </Li> <Li> Kristoffer Polaha as Nathaniel "Baze" Bazile </Li> <Li> Kerr Smith as Ryan Thomas </Li> <Li> Austin Basis as Matthew "Math" Rogers </Li> <Li> Arielle Kebbel as Paige </Li> <Li> Ksenia Solo as Natasha Siviac </Li> <Li> Emma Caulfield as Emma Bradshaw </Li> <Li> Austin Butler as Jones Mager </Li> <Li> Lucia Walters as Fern Redmund </Li> <Li> Erin Karpluk as Alice </Li> <Li> Rafi Gavron as Bobby "Bug" Guthrie </Li> <Li> Shaun Sipos as Eric Daniels </Li> <Li> Landon Liboiron as Sam </Li> <Li> Reggie Austin as Jamie </Li> <Li> Megan Charpentier as Young Lux </Li> </Ul> <Li> Britt Robertson as Lux Cassidy </Li>

Who plays emma's son in life unexpected