OMG Limiya,
I just read your thread long "addicted to my ex"
I'm going through the same thing & he's doing exactly the same thing as your ex did. He called me sometimes and told me to come over, said that he needed me & said that he's not sleeping with other women... gosh...
I just booked a psychologist today, will go there next Wed. the hourly rate is more expensive than cocaine... but i need it. I need to get rid of my addiction to my ex.
(just read the sticky note about the brain chemical of the loved one. It gave me some insight too. The chaos our ex gave us messed up our chemical in our brain, we go through withdrawal symtom as our brain is not used to the peace anymore... it went too extreme, from the chaotic life to the peaceful life after breakup)