but her moments of clarity where she indicates she knows there is nothing long term with the OM gives me some hope that three is a path forward with her. .
Do you think she is actively involving herself in a relationship that she knows will only hurt her down the road? Or perhaps, shes rather, telling you something she is more "unsure" about so she can 'cake eat'?
Not sure about your W, but mine would not start a new relationship with someone only to know it's going to devastate her in the future. I'm not saying you're wrong, or she's lying, but remember the rules... she will say anything to get what she wants right now.