While Malcolm is gone , Lily and Neil discovered the truth about her paternity , but were unable to contact him .
When Malcolm was proven to be Lily 's father , he and Dru decide to keep it a secret and he left town .
While Malcolm is gone , Lily and father discovered the truth about Lily 's paternity , but were unable to contact Malcolm .
When Malcolm was proven to be Lily 's father , he and Dru decide to keep it a secret and he left town .