@ TheFallenwanderer i have a idea for " Leave " please reading it.
After a while Harry left Snape to feel the house was empty, cold, lonely and remembered Harry ,remembered their childrens , about Harry's warm . Snape tries to forget Harry ,but the noitalgia kept growing ,he borrowed alcohol to be sad later because he could not bear after all ,he went to find Harry and his child's. About after 10 years ,Snape back to Hogwarts and suddenly met harry and child's . Met Harry again as a colleague ,professor of black art prevention_Harry and professor poison_Snape . Next few years ,while more details like Harry are borrowing someone to forget Snape. Then gradually his heart is shaken by Snape for covering his childrens revenge for being killed by Death Eater , and the two slowly joined together ,becoming a happy , thoughtful family .