MIL will be the end of this relationship

Trust issues. They keep coming up and I don't know what to do with them. They sit in my gut like a stone, wake me from terrible dreams and set me back emotionally decades. This weekend my partner picked up an appliance from our old house (in prep for sale). His mother was supposed to be in town for a sailing regatta and was going to leave a truck for him to convey said appliance from old house to new house. My gut said NOOOO, don't use the truck, rent a truck, borrow a truck from a friend, carry the frigging thing on your back, anything but rely on the most unreliable, screwed up, narcissist (his mother) that I've ever met. I got lazy and said nothing. On his way out the door he took a chandelier. When I inquired about it he said it was to stage the house. Yes, I said, but your mother, who insisted that we sell the house so she could get her money out of it, turning our lives upside down for 18 months, is supposed to be FULLY in charge of prep & staging of the house (which was supposed to be done by end of December and it's now mid-January, but that's another blog), so WTF, why are WE supplying stuff for her to stage? Reply back was snarky, "If you don't want to stage it, then I suppose you're willing to forgo the proceeds?" At this point, if it makes your mother go away permanently then, sure I'd forgo the proceeds. But right now, I'm tempted to ask you to go too, asshole.

Flash forward. I arrive home to find that he's back, appliance is installed and he's got some god-awful smelling substance permeating the house. WTF (again) and he says, "Sorry I put down this resin to prep for tiling and it's just really awful." How'd you make it back so quickly, I innocently inquire, already knowing in my heart the answer. "My mother followed me back." So you've been a dick to me and shown your mother where we live (which I really have made clear I did not want to have happen, she has been HORRIBLE and I want nothing to do with her, including her knowing where I live. I've even blocked her from calling my house as she thinks that 6:30 am - 11pm is an acceptable window for calling BS with her son). "She didn't come in the house, she just sat outside." The woman wears 400 oz of the most nauseating "perfume," probably to cover the stench of her evil, and coincidentally my partner has dropped some resin that would cover the smell of death. But she never came into the house. Right. I call bullshit and I am pissed.

He agreed that it was best that she not be invited to our new home. He agreed that she wouldn't. He said he respected my feelings, didn't agree with them, but would comply with my request. So now, what am I to do? he's clearly decided that my feelings and requests are not worth his regarding. Do I just go out and fuck strangers and say, Gee sorry honey, I guess I "forgot" that I wasn't supposed to? Do I leave? Do I toss his ass out? He really isn't leaving me with much choice. When your supposed-partner completely disregards your feelings, where do you go from there?