Prob I’d there’s a lot of excuses op.
Say he left he would want his name off the tenancy rightly so, which means new tenancy which means you might not be allowed to stay anyway.
another example say you found a house, you’d get uc, plus some of childcare covered, you would still be expected to work more hours like a million other single mums. Councils have landlords that take council referral tenants.
you say you couldn’t say leave the kids with him because of his house, morbid but say god forbid you dropped dead, do you not think he would change hours, hire a nanny, her family to help etc. because he would because he would have to.
Its all excuses as to why YOU have to stay in that house.
Do you expect him to share a bed every night, lying to the whole world that his gay wife is really his straight wife? Do you expect him to never have a gf or have sex with a women again? Are you willing to never have a gf or ever have sex again with anyone?
Your sexuality is basically bugger all. You don’t want to be intimate or love your husband in that way anymore. That’s cool but don’t use being a lesbian as an excuse as for why it’s harder than a normal separation. You’ve fallen out of love. People move on.