Separating on joint tenancy...how do you go about this?

[Bigpanda3]

Dp is making my life miserable, and has been for years, and I am ready to move on. Not violent/abusive but an all round miserable 'relationship'.
Unfortunately, we have a joint tenancy. 1 child is just mine, and one is both of ours.
Dp says that because I'm unhappy i should be the one to leave. He claims that he doesnt want us to break up and loves me, however he is equally unhappy, he won't admit to it but his behaviour is not that of someone in a happy relationship.
I have nowhere to go. I think in an ideal situation for him, I would take my child with me and leave our joint child with him, obviously i wouldn't want to do this as i am the primary carer with school runs ect.
How does this work when we cannot agree who should stay in the house? I know as a last resort these things can end up in court, what steps would I need to take?

Hi op, so your home is it private rent, or housing association, if housing association you can speak to them explain your situation and see if they can offer you another home,
If not can you look for another private rent can you afford this as well a furnish it, you have to consider every possible way, obviously he not considering moving out so unfortunately this falls to you, would be really difficult to separate the children too op, think you need to consider moving with both of them,