Maybe her niceness is just friendly civilized coparenting? Maybe her niceness was for a reason....financial help? If it were consistent changes over time then maybe it would be different, but she seems to only be nice when she wants something or guilt gets her.

Any luck in the job sitch?

Me: 46 FWS: 36
Married and Divorced 4/07, Pregnant 7/07,False R 7/07
Baby Girl born 3/08
Kicked him out because OW: 7/08
5/10 He realized what he had and lost.
Moved home! REMARRIED 3/14/11!!