Alison, I would expect your H to be pleasant to you now you have agreed a D. He feels he no longer has to treat you like the enemy or that by being nice it will give you false hope that he is coming back.
Yes I partially expected it too. It just threw me for a minute b/c it was almost like the last 2.5yrs hadn't happened.
Me 43 XH 45 M 2.7.88 Divorce 7.10.09 Kids D20,S17 & D15