Welcome to PC.

That is a difficult one. I think the relationship should be based on more that him being provider and you being mother but obviously his sitting on the computer all day and not looking for work is a big issue. How have you been surviving the last year? Is he getting unemployment? Is his Dad supporting you? Often men if they are getting unemployment or something and the bills are being paid have no incentive or motivation to look for a job as long as the bills are paid. As soon as they see that source of funds drying up then they get panicking. If you nag him all the time about it it might have the opposite effect. If you threaten to leave him it has to be real and not an idle threat.