After the war Harry got a letter from Professor McGonagall that Severus Snape was alive. Harry went to watch over the man while he recovered and they got close. After his break up with Ginny Harry got a job as the Flying instructor at Hogwarts. Lots of spelling errors. Sorry

To avoid the machinations of the minestry, Harry must marry a reluctant Severus Snape. But marriage to snape is only the beginning of Harry's problems. Voldemort has returned, and before too long Harry's marriage may determine the world fate.