Need a guys advice

I have been with my boyfriend for 5 years and just recently got engaged. Im have been crazy for him since i first saw him. The only problem i have is his way past a dead end job. He has been there almost 10 years and can not make ends meet but Every time i bring up looking for a New job he gets mad and changes the subject. My stepdad has even told him he can get him a job with good pay and benefits and he ignores it. How am supposed to plan a wedding when he can't help pay for anything? I love him so much and his job is the only thing i would change about him. How do i get him to get a real job with benefits?