Need help with relationship.

So here is the issues we have been having. I am the head of the household, I work full time, and when I come home I expect the house to be taken care of, since he does not have a job at the time. But here is where the issue comes in. We have a kid together. He will only clean the house if I ask him specific things to clean. If I ask him to clean in general the whole house, he will say I don't know what you want me to clean. And our house is messy, trust me you could know what to clean just by looking at it. His day consists of taking care of our son who is 13 months by doing the basics, feeding, playing, watching t.v, etc. Then when he naps, he plays World of Warcraft. If the house is messy, he leaves it that way, if I make dinner for us, or even just myself, he will not clean it and it will stay there for days until I finally get a day off to clean the house. I get two days off a week. I don't ask him to is the reason why he won't clean it. Now my opinion is that since I am taking care of him 100 percent that he should help out by cleaning without me asking him to, etc to help take the stress off of me by being the sole provider of the house. I think that he should just do it without me having to sit there and command him to clean specific areas of the house. I feel like that is immature behavior because any adult should be able to see a mess and then be able to clean it up. I'm 28 and he is 22. Obviously there is a serious age difference and it is causing a lot of issues. I am pretty much ready to end this relationship and just accept the help from my Grandpa for day care because our arguing is only increasing as of lately (past week) and every time I have a day off we argue about the same things and it is to the point of making my days off just as stressful as the days I have to go to work for 8 hours. And it is really starting to affect our son and I don't want him to grow up in a home that is just here for show.

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