You are very isolated, but you are not alone in this world.
There are actual home based businesses that you can do from the computer and mail. I am doing one myself now and itdoesn't require me to go running around, but it does require me to prospect and follow up. There are others that can finish the deal, but it is also an option for me to do so (and make more money!).
There are a lot of legitimate ways to build a business online these days and right now you have the PERFECT opportunity to spread your wings in this way. PUt your energies into it and prepare yourself for your future-with or without him. At some point,you may need tomake a choice. While I hope it doesn't come to that, I would suggest that you keep this entirely in your own name and work entirely independently of him (not that he would help anyway, certainly)
If you want to email me, you can, but if not, just go online and do research and find yourself some options. You are going to need options, one way or the other.
Be strong, be brave and be fearless. Don't wait for him to get a clue. You already have one!