New here but learning slowly. Advice appreciated

[Albuquerque]

Well the madness continues. I certainly have a different situation to deal with than many of you. My H gave me the ILYBINILWY speech, followed by some arguments and complaints about me, the M etc. But once I figured out what was going on, I have worked to be friendly, civil, kind etc. Because of D, I end up seeing H a lot and our communication is somewhat like being in the Twilight Zone because we talk and joke and discuss stuff, almost like before. But I definitely don't talk about myself unless asked and even then, I keep it short since I don't get the impression there's a LOT of interest.
I noticed a few weird things today. My H was over at the house today visiting with D because she got a new Nintendo game she's been waiting on for months. After getting tangled up with my dog, my anklet broke in the kitchen and small piece got lost. I bent down looking for it and H asked what I was doing, so I let him know what had happened. So he gets up, grabs the flashlight and starts looking all over the kitchen for it. I don't think *I* even cared that much about it. Just odd.
The other weird thing is that he had commented on a FB post I had made earlier in the day. This evening, I hopped onto his page to follow a link he had posted earlier in the day. Those of you familiar with FB know that on a person's wall, it'll list all the pages they've commented on etc. There were many listed, including several of D's posts that he commented on. My name was strangely absent. I think he's erasing all evidence of commenting on my page to keep OW from knowing he's talking to his wife! Since I have a weird twisted way of finding humor in things, I'll choose to find this mildly disturbingly funny. The flipside of this is that he's probably doing the same to prevent me from knowing about OW but since she posts all over his page all the time, it's not really that hard to figure out. MLC=confusion indeed
Detachment certainly helps.....