I think you can survive. You might lose a little weight though. I practically lived off of Top Ramen and Cheerios my junior year in high school (ditching to surf).
I was stuck before I even moved in with him I moved in with him straight away, running away from another failed relationship, and again, I didn't have anywhere else to go. Sigh, wish I was rich. Then I could afford my own place. Fuck Australia and our wages...
Hope things work out for you aswell hun, you deserve nothing but lifes finest. Hugs.
Is that music from Snatch?