Hi and welcome to PC-did you & your husband seek any type of therapy regarding your split? I think a good dose of therapy with a 3rd party would be good for both of you-that he went back to his ex who had left him & then he came back to you-that's a lot of baggage. You should mention this to your pdoc also-without being brutally honest with the people who are trying to help you I think you are going to continue this unhealthy obsession. As has already been mentioned I would discontinue the fake facebook & I think you should really limit your time online-take care & remember there is a lot of support here available at any time.