Name change but I've posted on here before about it which some may remember. Posting on Relationships for a change because AIBU just turns your problems into a soap drama with "why bother posting if you won't take our advice" if you don't LTB within 20 minutes of posting. 
Anyway, I do need to LTB this time and I'm looking for a handhold and some advice as to where to go from here.
I've caught him spying on me again. And it's undeniable this time as he had the camera on and running, but hidden behind something until just before he left for work then he moved it so he could see my comings and goings.
I caught him out the last time and he fed me some bullshit story which I chose to believe (because it was easier than leaving) and promised he wouldn't do it again but he has.
It's the final catalyst. We've been coasting along for years but now it's time to cut the cord.
Couldn't come at a shittier time with the cost of living, inflation going crazy, and we've just tied ourselves into another 2yrs on the mortgage.
Wise women of Mumsnet, what is my next step?
Not married, no kids, joint house/mortgage. Neither can afford to buy the other out. I've fucked up massively by having our so-called "joint" savings in his account so they're gone.
I feel like I'm swimming in treacle right now.