The Girl Next Door | Baby Daddy

When an ex leaves a baby girl on Ben Wheeler's doorstep, his world is flipped upside down. The first person he recruits to help him is Cassie Perrin. Along with being his neighbor, Cassie is Ben's childhood best friend. Together, along with Ben's goofy older brother, eclectic mother, and Cassie's uptight sister, the unconventional family takes on raising a brand new baby girl.

(This is based around ABC Family's 'Baby Daddy,' but you do not have to have seen the show before)