It is after the Battle at Hogwarts Snape managed to survive. You were raised by your godmother McGonagall. You are single and in your thirties, (forties if you want to be older then Snape) so McGonagall thought it would be good to set you up with Shape. After a little convincing Snape finally gave into McGonagall. Since you used to know Snape when you guys were students you are quite nervous since you haven't seen him since graduation. You are now waiting in a coffee shop for Snape to arrive.