Starting Over

I have been living with the same man for 12 years. We used to be so in love but not anymore. We havent been intimate in 7 years after a terrible miscarriage. I want so badly for both of us to just move on but he has quit working and will be homless if i tell him to leave. I feel like i am stuck in this depressing life.  I dont know exactly how to end this for good and move on.  What do you think i should do?