Was It All A Lie? [Severus Snape]

When Severus Snape survives the war he decided to go back to his normal life and teach at Hogwarts. The Ministry of Magic recives a tip that he is planing on helping former death eaters escape Azkaban so they send out a spy. This spy is called Gamila Woodblood, one of the greatest spy the ministry has ever had. But what happens when Snape and Woodblood develop a romantic realtionship?