<human>: Can you condense the text into a few key points?

Hey Relationship_Advice - I'll make this short and sweet, my SO and I have been living together for 2 years now (3 year relationship - 23yo&24yo) and he is a little piggy. I love him dearly, I have tried numerous times to get him to be more tidy and clean up after himself. 

I have tried: Not cleaning (end up cleaning after a week cause our apartment is disgusting), making a chore wheel together so that we both have equal share, making a list for him (he asked) but that gets tiring because I have other things to do than play mom and tell him what to do. 

He constantly does the same things over and over, like leaving food out in the living room or kitchen (pots and pan on the stove) for days, or stuffing coke bottles with wrappers and then putting it in the TV unit thinking I won't find it….he puts garbage in the night stand…I once found an orange juice behind the nightstand growing some creature and a chip dip in the drawer trying to grow the orange juice creature a friend. 

It's becoming tiring for me because I spend about 7 hours a week cleaning…I am in school and so is he, it seems unfair that I have to clean up after him. He's an adult, how do I try to fix this without blowing my top or constantly nagging him. We have a great relationship, it's solid on all other fronts, and we've talked about this over and over again…and he says he'll change it but he's just not, for his sake he has improved slightly over the past 2 years. 

Thanks :)
<bot>: I am very neat, SO is a little piggy (wonderful little piggy) and leaves mess everywhere for me to clean up. Don't know how to fix the situation.