What do I do about a VERY unique problem? (see below!)?

I'm a fairly young person, not unattractive, not lovely, but very closed-off. I was diagnosed with Asperger's Syndrome and I have a history of being emotionally abused (Thanks a lot, dad. =_=). My problem is feeling decemated over someone who never loved me. I'm an avid watcher of online reviews, one in particular who shall not be mentioned. I absolutely LOVED this guy! If he would have asked me to jump off a bridge, I would have asked which one! Today, I found out that he has a girlfriend and I CRIED my little Kaylee eyes out. I convinced myself that I was over it, until I began following him on Twitter. I'm STILL crushing hard! What's wrong with me? Why am I so unlovable and dependent on fictional characters to make or break my life?