Severus x lily

this is lily evans x Severus snape this is an au of if James cheated on lily and Harry grow up with Severus and lily but no one know that Severus is Harry stepdad there may be a plot twit ps lily is still alive she never died // So Harry James evans Snape is the Biological Son of James potter and lily evans but Shortly after Harry was born lily found out James was cheating on her so then Severus Snape helped lily they soon got married and Severus raised Harry as his own child so much so when Harry turned 10 he took his fathers last name potter out of his name but everyone still knew him as Harry Potter . Harry is dating a smart Gryfindor named Hermione granger they are both in there 5th year of hogwarts and both have to deal with a nightmare of darks arts teacher Dolores umbridge , who wears nothing but pink and no one likes her . Everyone was happy when it come up to the Christmas/ Yule break they wouldn’t have to deal with her until January. So it’s Christmas time and hogwarts was done for the Yule holidays , everyone was excited it was the 19th December a week or so before Christmas and Harry was in Snape manner he forgot to tell Hermione about his mum and Severus and who house this was. So Hermione and Harry was in Harry room talking when they heard a noise and went to investigate it . Hermione was shocked to see Severus snape because Severus is a teacher at hogwarts and head of Slytherin, he can be very strict she was shocked to see him kissing Harry’s mum. Will she be even more shocked when she finds out they secret Will lily and Severus decide tell Hermione the truth. Ps Harry has a lil sister well stepsister called esma Lilyana evans Snape she is only 3 years old and she is adorable she goes by the nickname es. Severus and lily been secretly married nearly 14 years now. What will happen next .