Why all of a sudden now... with this man am I doubting myself? Why in God's name was it 10 times easier to walk away from my HUSBAND! The father of my son... the man I took vows with and spent all of those years with? Rather than walking away from a man I've known.... what? 8 - 9 months?
Because master manipulators are EXCEPTIONALLY GOOD AT WHAT THEY DO. They are "masters" of their art.
Be gentle with yourself. I understand your feelings of humiliation and embarrassment that you mentioned earlier. They are absolutely normal. But, please, hold your head HIGH and remind yourself that you have nothing to be ashamed of. If this guy were an honest, morally sound man, your relationship would be everything you thought it was. But he IS NOT those things. You were misled, lied to, and cheated on by a master who instinctively knows a good thing when he sees it (you) and did what he needed to hook you.