Like Liars Looking For Forgiveness

Severus Snape planned on Lily Potter not dying. He planned on mourning her when she did. But he did not plan on taking in her orphaned son nor that a certain dog Animagus following him home. Now having to care for two young children while hiding from everyone, Severus will have to also figure out how not to kill Sirius Black. Even if he really wants to. (Harry Potter AU)