Let her be afraid, TDF! My H said similar. He looked at breaks ups I had in my past and evaluated how I treated the ex during and after the breakup. It helped him to know I meant business when I finally agreed to D.
He said he saw changes I had made in myself, for myself, and yet I was assisting him in D proceedings and he knew that pretty soon he was going to be on the outside or my circle of affection. And he found that frightening.
I'm not suggesting anything for your sitch, just sharing.
Hang in there
Me54/H47 '08 H is "done" March '12 H moved out Brink of D, December '12 2014 totally reconciled! ...... "I firmly believe in the...absolute possibility of marriage renewal." Jim Conway