Basically i have been single for the past year and before that i was going out with this girl for a couple months and then out of nowhere she broke up with me with no explanation of anything. Then 3 months later she contacts me and we start talking a little mainly on AIM and then once again out of nowhere just stops entirely. I have only had one other gf in that time and i still couldnt stop thinking about the the first one. I still can't whenever i have nothing to do and nothing else to think about she always comes to mine. Is this just an obsession or what.