Boy, I wish I knew what to tell you. I am so sorry your ex chose to stain her marriage vows by dating before your divorce was final. In my profession, that'd cost me my job. You're either married or single. Separation is still considered being married. Sorry.
I think when it comes to rebounds, a person has to know that he is "over" his ex spouse and must know what he did wrong to cause the marriage to fail. He must correct those things.
At only the first stage of things myself (sep agreement pending submission to the judge, hopefully next week), I have a long, long way to go yet. But those are my thoughts.
