The story I want to find is called "Shades of Twilight". It is completed, M-rated, and the pairing is Edward/Bella. The plot goes like this: as a teen Bella is drugged at a party by Edward's half-sister Jesse, and then she is placed naked in Edward's bed. When she awakes she doesn't remember anything, but as she is naked and Edwards is laying next to her she thinks he may have abused her somehow. She leaves without having this confirmed, and spends the next few years hating him.

Edward did not harm Bella, however. He was a very awkward teen, and suffering from some sort of physical malfunction. His father Carlisle married Jesse's mother, but Edward did not like the new family members. Some time after the mentioned party, Jesse visits Edward at work where she tries to seduce him. When he refuses she stabbes him multiple times, and Edward is lucky to survive.

Edward and Bella soon meet again. He really likes Bella, but she still hates him. However, the problems between the two are later cleared up. In the end, they move into Bellas grandmother's old house, and Bella reveales she is expecting twins.

I've spent sooo much time trying to find this story on google, but the title complicates things as it often leads to "Fifty Shades of Grey"-articles. If you have access to "Shades of Twilight" or if you know where I can find it please comment in the reviews or contact me via PM! I'm getting desperate here... Thank you so much in advance!

/Crispin