Kimmerz, Glad to see that you and the girls had a great night. It's nice to see you living your life again.
About the "return receipt" function, I think you h wants control in any way that he can. In his mind, he thinks that if you get the message and open it, you are responding to him and you've openned the text. Little does he know that just because you open it doesn't mean you are reading it...you could very well indicate for later or delete. It's a control issue for him...I know, it's rather stupid, but look who you are dealing with...an mlcer.
It is BS because he is getting the messages...he just doesn't want to respond to them. Trust me, he's getting them.
Your MIL gave you the same description that I got from family members about my xh and his twinkle twat...they didn't act like a couple. In fact, mlcers and the op generally don't act like couples the way we know couples should act. They are companions, best buds/pals and f@ck buddies. The so called love that they have for each other isn't the true, deep, compassionate love that we have experienced w/another person.
I'm sure your mil was very uncomfortable around them. It shall prove interesting for Christmas for her! LOL! I'm sorry that your girls are going to be exposed to the ow's family at Christmas, but thank goodness it is only for a short period of time. Your xh is going to continue trying to drive the ow down their throats because he thinks he wants them to accept her. I don't blame you for feeling the way your do about the situation. Your girls need your support now more than ever. One positive, if your mil goes to their house, your girls will have someone they can talk to. What a mess.
Hang in there and enjoy the time you spend w/your girls. Your xh is missing out on all of the wonderful memories that you three are making.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.