What do I do about my boyfriend not working?

My boyfriend and I have been together for almost two years now. He is 31 and Im 22.. the age difference isnt the problem. The prblem is he wont work.. He has had temp. job but nothing reg. He always says he will get ajob but just procrastinates about it. I have been supportive and nothing happens..I have been a complete bi* and nothing happens.. It got to a point where I almost ended the realtionship but promises of him working made me rethink the break up… He has two kids 4 and 6 …When they come to visit I have to support them also.. on a min. wage job… I dont mind spending money on them, I just wish he would. I dont want to end things with him I just want him to get a job… When we first meet he didnt have a job then, and I told him I was concerned bc I didnt want to end up supporting him and that is exactly what Im doing… I want to go back to school but I feel like I cant bc I have to work 40 hrs a week and plus we share a car so If I did work and go to school I would have the car the majority of the time soh e wouldnt have a ride to work.. I need some advice.. I dont want o end things I just want him to get JOB!