How do I bring up a hard topic to him?

I love my boyfriend to death I do. But it’s like I’m raising a child. He has two kids and I love them to death but he’s likes the third child. But there has been things that has drove me to almost having a mental breakdown. Such as me and him live together, we both have jobs, but my job is more demanding than his is so I’m the breadwinner in the relationship but I don't mind but the issues happen when I get home from work, where he gets off a few hours before I do and by the time I get home, cooking, laundry, dishes, cleaning etc needs to be done but instead he’s playing video games. Which I get it you need time for yourself but if I ask him to do something I usually have to repeat it 20 times before he will actually do it. But eventually it all lands onto me because he will do somewhat but not all of it. Which I don’t ask much like putting the washed clothes into the dryer or taking the trash out. The same with his kids, like I said I love them but he depends on me to raise his kids while he just watches tv, plays video games, or sleep. Such as going out of town with my sister or parents for just for the night he will beg me to stay because quote on quote we are building a family and I need your help into doing so. Which I know he can’t handle the kids by himself. I just need advice as to how to handle this and voice my concerns to him before I completely loose it from having to do absolutely everything.

How do I bring up a hard topic to him?
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