My favourite AU couples are:
1. Brathan (LOVE LOVE LOVE Brathan)
2. Dan and Blair
3. Haley and Julian
4. Tyler and Caroline
5. Chuck and Serena

Come on guys! Make a top five! Many views but one reply? Come on!

1. Dean & Ruby {Supernatural}
2. Tyler & Caroline {Vampire Diaries}
3. Chuck & Serena {Gossip Girl}
4. Sam & Bela {Supernatural}
5. Sully & Trish {Harper's Island}

Just to update!

1. Stefan and Caroline TVD (I still love Forwood but they are not AU anymore)
2. Tru and Jack (Tru Calling)
3. Brathan OTH
4. Bamon TVD
5. Dair GG

ryan & summer // the oc
stefan & caroline // the vampire diaries
hanna & ezra // pretty little liars
brooke & nathan // one tree hill
naomi & navid // 90210

1. Damon&Bonnie // The Vampire Diaries
2. Alaric&Elena // The Vampire Diaries
3. Lucas&Haley // One Tree Hill
4. Liam&Erin // 90210
5. Chuck&Vanessa // Gossip Girl

1.Damon&Bonnie // The Vampire Diaries
2.Kol&Bonnie // The Vampire Diaries
3.Klaus&Caroline //TVD
4.Dean&Bela //SN
5.Gwaine&Morgana //Merlin