Help-separated from husband, considering reconciliation, but have now met someone else..?

I think you should remain on the course you've chosen. I understand that you are sad about the pain you caused your ex-husband, but it sounds to me that, not only are you happier away from him, but he is happier as well. This may be because he's seen the truth of his ways, but still. I think that, if you are not in love with him, you should leave him be.