Thanks to both of you for your kind words of support. I feel better today, two days after the fact. I do understand that holding onto anger does nothing to further my own growth--that it only holds me back and turns me into someone I don't want to be. I am a happy, positive person and choose to surround myself with similar people. I regret having ever encountered someone so sadistic and allowing myself to feel sympathy for him when he can feel none for anyone else.
But it's not my job to change him. And sadly, it's not my job to warn other women about him. It's only my job to look after myself and those I love. And to live a life of dignity and purpose.