I enjoyed reading this ... I liked your Harry and Severus quite a bit. Harry acted sensibly when he realised that Severus had changed, even though at first he stubbornly insisted on remaining hand-fasted. I liked the way Harry offered to give it all up, but Severus decided to stay for the year. Your Severus stayed true to form, too, without moving out of character. I could easily see him falling for this Harry. I loved Harry's drunken kiss and Severus' reaction. ♥
I also liked the different ways the canon characters lived their lives in this story. Very imaginative - I never guessed that Lily was with Kingsley. It was a nice touch that it wasn't Sirius.
I'm so pleased that at the end of the story Severus remembered what had happened. That made it easier for me to accept that HE had accepted his new life. It would've worried me if he hadn't come to know what had happened - I like all my ends tied up neatly!