Is it normal that my fiance does not help support us financially?

My intended and I have a young child together. We each have children from previous marriages as well. At first, all seemed to be going along relatively well. He came to live with me at my house and we had our child. He smoked weed every day, several times a day. I have been the bread earner throughout the relationship, trying to maintain a house and vehicles, things the children need, etc. BUT... when money got tight, really tight, weed was not in my budget. I saw him do many things, include telling his familly things that were untrue about me in order to get money so that he could make his purchases,not groceries. I have not asked for money but felt like when he was employed, and it has been a spotty employment, he would make some effort to help support his son. To help with house payments and utilities, etc. His mother purchased a vehicle for him, pays for the insurances. His cell phone is paid for through my work. I think, am hoping, that since he took a driving job about four weeks ago, he has been clean. We had argued a lot previous to him taking that job. I was worried that he was going to get into trouble for not keeping up with his child support, for his other child. I didn't want my children to see him get into trouble for something he could take care of if only he would keep a steady job. He was home today from being on the road for seven days. I only had about an hour to see him. This is very difficult for all of us. For him as well, I am sure. I take care of two boys, work full time in a family owned business that we are thankfully recovering from the financial stresses that happened last year.I mentioned that I had made the first part of the house and utilities payments. I guess really hinting that he just got paid and some help would be appreciated. His response was that he had to pay his lawyer to represent him in court over the child support issues and that was over 60% of his paycheck. I spend 100% of my check just to keep us afloat every month.I am trying to be understanding. He is already making noise that he doesn't like this job, the guy he drives with, etc. Things have been crazy to the point I thought I might loose my mind. The only things that kept me sane were my two boys. What can I do at this point? I love this man and I don't want to have another child go through coming from a broken home. Is it normal for me to ask him, point blank, that I expect financial support, that I expect him to maintain a job, that the weed smoking has to be a thing of the past (please understand, it was not every now an then, it was multiple times every day), that I expect him to make an effort to develop a mutually respectful relationship with my oldest son and that he come up with a visitation plan with his daughter that works for everyone so that she can be with her dad most importantly and also get to see her brother on a somewhat regular basis?