How do I not resent my boyfriend for financial reasons?

Last year, my boyfriend and I were living in a home his company provided. We both made decent money. All of a sudden, his boss cut him loose and we had to vacate the property. We stayed with his parents for 3 months.
A few months ago, I closed on a house. Since we aren’t married, it was better that I did that alone.
All the utilities and mortgage is probably close to $2000. And all he can afford to give is $80/week based on his job.
He makes $12/hr and works from 30-40 hours a week. Sometimes he can’t give any money because he overdrafts his account and all his check goes to that.
I know I probably sound selfish, but I don’t know what to think. We’re both supposed to be supporting this household, but lately it doesn’t feel that way.
How do I not resent my boyfriend for financial reasons?
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