My apartment is disgusting.

I've (24F) been living in a one bedroom apartment for about three years now. A little over a year ago, my boyfriend (24M) moved in with me. Ever since he moved in, the apartment is ALWAYS a mess. The bathroom is disgusting, the shower is disgusting, the kitchen and living room are constantly piled with trash. He doesn't sleep in the bedroom with me because I move a lot in my sleep, and instead sleeps on the couch in the living room. He constantly leaves mess by the couch. Half full drinks, empty bottles, food trash, messy dishes. We both work full time, but when I lived here alone working two jobs my apartment was never like this. I bust my ass to clean a few rooms even though I'm exhausted after getting off of work and within a week they're disgusting again. He never helps. He never picks up after himself. I feel like I'm cleaning up after a child. He doesn't help with the grocery shopping, he doesn't help with the dishes, sometimes he'll take out the trash but unless I explicitly tell him to do something he won't do it. He has openly admitted to being lazy and "not wanting to clean" multiple times. I've tried asking for help, and he'll help that one day and then never again until I ask again. I'm breaking down and writing this because I just tried to do the dishes and ended up pouring water all over our kitchen floor. We've had an issue with the kitchen sink where it will drain but extremely slowly, sometimes not fully drained until the next day. Today I tried to do the dishes (with the drainage issue its annoying but doable) and noticed that the water was draining straight onto the floor and it made a huge mess. I keep telling him we need someone to come look at it, and he says not until the apartment is clean, BUT WON'T HELP ME CLEAN IT. He just keeps making more and more mess, making it harder and harder to clean up. I'm not saying I'm perfect, I definitely contribute to the mess, but the problem is I'm the only one willing to clean it up. I cant ask for help from family or friends because I don't want them to think poorly of me. I'm just at my wits end. I hate living like this.