Different situations, same problem! I am still sharing a home, but not a bedroom. Kids at home too, and plenty of public family times. Currently I need to make it seem that all is good.
Lately, it is really working for me to actually engage, but with a plan ahead of time for his I am going to do that, so that I am in charge of the conversations. I have specific topics and questions I’ve thought of to ask my husband about, like a trip, a conference, what did he see on his run, etc. This takes away the tension that inevitably comes up if there is no conversation at all. When there is silence, my grief and anger fill up the space. And that tension would create more tension and emotional pain. Essentially I am hiding my continued process of detachment by showing connection. It is weird, and hard, because it seems like maintaining the relationship. But it is my plan, and I am intentional about it, and also have an “escape plan.” Meh in the background.