This story is about Y/N Watson (you) and Sherlock Holmes. You came to 221B Baker Street to visit your cousin John. You became very close with Sherlock and after some time you started dating. After you and John saw him jump off the roof two years ago you were wreck. You tried to kill yourself few times, because you couldn't bare the thought of Sherlock beeing gone. John and Mrs.Hudson kept a close eye on you almost all the time to make sure you didn't try anything which would harm you in any way. This story begins when John finds out that Sherlock is alive. You are living in Sherlock's flat, where you mooved year and a half before he "died". In this story isn't Irene Adler. I think that's enough information for now.
