Just don't stop what you are doing b/c she is softening.
And ask yourself this: what is "softening"? Because... often... it's just the begining of realizing there are going to be some losses... in terms of security, that you may not be there to be her buddy (which is why you don't want to promise to be her buddy), and so on.
If she's ready to re-commit to your marriage, she will tell you that. My W initially did things that seemed like that is what she wanted, but then... naw she didn't "feel" what she needed to feel, and that's what is important in the begining. She has to feel something (e.g. loving feelings & respect).
You don't want to be nasty about it, but while she is chasing somebody else, she can't stay in your home. Be firm.
M-47,W-40,No kids D-filed 5/27/2010 Piecing - 10/21/2010 -=Soon to be banned=-