I still think how old your children are is relevant. Babies, teenagers?
I think a lot of people, although loving their children, find the pre-talking phase really difficult - the baby really does seem like an alien sometimes. Then a lot of people, with a big overlap, also hate the toddler phase, maybe because the toddler now CAN talk but apparently wilfully doesn't communicate like an adult would (not saying this is my opinion).
Frankly I think hating your partner for chunky stretches of time is quite common in the preschool years, because so much of your tolerance reserves are used up just remaining patient and good-parenty with the children - you reach a point where you simply cannot make allowances for any more people, and your partner takes the brunt of that. Alternatively, you still love your partner but then can't or won't spare any resources for the children, and they seem intolerable for large chunks of time.
Of course it doens't have to be like that, but having been on here for a few years, I know it's not just me and dh who struggled with the pre-talking years. Things turned a dramatically huge corner for dh when ds was 2 and again when he was 4 and able to entertain himself a bit - all of a sudden they were good buddies.
Anyway, I don't quite know why I'm posting this - I suppose I hope that this is a factor of the children's ages and IMO this increases the chance you will find a way back to each other?