He is a liar, cheat and capable of hurting you deeply. And let's not forget the potential joy of STD's.
If you want to make it work do it on your terms. Do it in an informed manner which leads to a healthy, not just good, place for you. It demands accountability on both sides. Him to repair the damage and learn what it takes to be a true life partner. You to feel your worth that you do expect and deserve the unerring love of the husband of your vows. And dang nab it.. that you're just one helluva a woman who deserves the best in life.
And about that job/business. It's toxic to your relationship with your spouse. I was afraid of finalizing the divorce. My brother and sister kept saying to get it over with so I could move forward. I was afraid of selling the house (my portion of the divorce settlement). The same siblings told me that only once it was gone would I be able to know what I could truly afford. I'm losing $130,000 of its worth in this economy and sold it under market value but I'm slowly feeling the relief of starting again with what works for me.
You are worth the effort. You are not a doormat. You do not need to excuse his behavior.
With my new perspective I wish I would have told my spouse to leave the house. I would have talked to a lawyer to find out my legal rights. To find out what the total monetary of cost of what your spouse has to lose and present it to him. Not what I would lose, what HE has to lose.
If he wanted to stay, he would. If he didn't, that's all the answer you need without going through your gut wrenching worry. He seems to respond to losing you, like when you moved out.
Take care of you, your mind, body and spirit. The rest will follow.