Lightinthesky, it sounds like we are going through a very similar situation...I too am questioning the whole relationship on the basis of my exes now behaviour - how can we mean so little in such a short space of time - how can they stop loving so fast? One site that really helped me was the 'depression fallout messageboard' please google it, it has been such a help to me. Also please feel free to message me on here, I know how hard it is to resist getting in touch. I feel like I'm never going to be whole again! How silly is that?