I have to say I agree with ambivalent! I wouldn't move back in UNTIL your W is committed to working on your M and herself (IC).
Considering you have children I disagree w Accuray to have a "back up" apartment ready to move back out if boundaries are crossed. I believe this is the WORST thing to confuse children.
I have been S for 10 months now & recently my H through out the idea of moving back in for "the sake of the family," not b/c he was ready to commit to the M.
I told him the M had to come first. I think that your W saying she would be fine is suggesting she would "test the waters" to see if feelings of happiness return. I think this is backwards and agree w AS that dating your W / continue to have one-on-one time together w/o the pressure of moving back in looming is the way to go.
Everyone's sitch is different but I caution you to be very wary of jumping in feet first too quickly!
M- 18 T-21 S-14,11 & 10 BD 6-18-2012 (OW-EA) H moved out 11-3-2012 10-5-13 Me- I want a divorce. I want to move on w my life. 11-25-13 Jointly filed.