I bet you want her because she made you crazy (not in a good way) and got your adrenaline going. Now you are just a straight up adrenaline junkie and the new girl hasn't messed with you or evoked that in you. Not her fault. Just realize it is chemically related like nicotine or alcohol and you are going through a chemical withdrawal. Maybe you should not have a girlfriend for the first year of "sobriety". Ha!