So when I read all of that I couldn't help but feel your desire to control. The fact that her phone use "bothers" you is on you! Why even discuss that. In our sitches, words are meaningless. This where you set a boundary........for YOU!
"When D3 is in bed, if W starts texting incessantly, I am going to tell her I am going out for a while and go hang at brothers."
So just do that, don't try to control her phone usage! Further, even if you do end up controlling that, do you think it will stop? Or will she go covert with it? She could be like my W and go into the bathroom for 2 hours so she could text freely with EAP. "Oh, my stomach is really upset. I kept feeling like I had to go!"
Same thing with the "in October to improve trust I was texting W every time I left/arrived somewhere which I continued to do even after she announced the divorce". Hmmmm really? Or was this your way of showing her what you require when she is out? crd, trying to control can take many forms. Manipulation. Threats. Guilt. Etc. I know how LBSs think about this because in my 2005 sitch I did the same thing. I gave all of my passwords for everything to my W. "Just wanted to be fully open with you." Remember, she is the one that had an EA in 2005.Admittedly, I was hoping in the spirit of building trust, she would reciprocate. She didn't.
So drop the rope. Stop trying to control. If she engages in things you can't handle, then get out and GAL!
M(53), W(54),D(19) M-23, T-25 Bomb Drop - Dec.23, 2017 Ring and Piecing since March 2018