@ShesMadeATwatOfMePam
he would be all sweetness and light and i would think oh thank christ for that he's snapped out of it. But as soon as they left, even if they just popped out of the room, the shutters came back down. I used to cry and cry, and wonder why the other person was worth speaking to nicely but i wasnt.
God yes this is horrific when you live with the person, your post brings it all back. 
I wasted 20+ years on my ex.
It wasn't all bad but I see now the good times were part of the cycle.
It takes a long time to get over that feeling of worthlessness from the silent treatment.
I was also the recipient of a long list of things that were wrong with me or that he hated.
For example, the first night I spent with my new partner, I lay awake rigid all night scared to disturb him, as ex had said i was a nightmare to sleep with and even joked about getting single beds to get some peace from me.
New partner loves sleeping in the same bed as me and says I'm quiet as a mouse.