When only one of you wants to separate

[swizzlestar]

How do you deal with it??

I've had enough of h's behaviour. He keeps signing up to online chat & hook up type sites. When I find out he always denies. This has happened 6 times over our 11 years together, but that's just the ones I know about!

I've had enough now and want separate, but he doesn't..... We're at an unhappy stalemate and I can't see any way forward.

Well there's no stalemate....you begin divorce proceedings. Or leave him....if your situation is complicated by property, you need a solicitor.

We rent at the moment so property isn't an issue, but the children are.

Well...who cares for them currently? How old are they? Do you both work?

If you need to do this, you do it anyway. He can't stop you.
Are you financially secure in your own right ?

Be ready for a difficult road but ultimately every day takes you closer to a better life.

I had the same thing (amongst other things too!) that pushed me to end my marriage. It was horrible.
That was nearly a year ago. It's hard but it's the right thing.