I’ve been like this too… I’m so depressed after I finished Tempted and I tried to read a fanfic that wasn’t bad but I just couldn’t concentrate… I changed to another and it was the same… I’m reading Drag now and even tho I’m still numb I know it’s a good story and I’m forcing myself to finish it… maybe you can try to read another fanfic for a few days and then go back to the one you can’t concentrate