So I live on college campus in a 3 share apartment in an apartment complex, with my girlfriend and one of our mutual friends who is a year older. She's your typical hampster; goes out gets drunk gets about 2 hours of sleep, fucks different guys every weekend etc. When I moved in here, the apartment was a fucking mess. Fridge was so filthy, everything was filthy. Girlfriend and I spent about 4 hours each day for about 8-12 days cleaning shit and buying new stuff (for example: Bin was too small for 3 people, and I bought a new bin)

Situation: (ADMIN SIDE): Our friend is very fucking unclean. She would leave mugs/jugs after she used them out, plates out, cooking utensils dirty, claiming she will 'wash them later': normally 3-4 days later. I cant fucking stand it, i'm a very clean person and I usually like the sink spotless and clean. So whatever dishes my girlfriend or friend will leave in the sink, I'll usually do them. It boils down to this (washing dishes): Me about 70% of the time, girlfriend about 28% of the time, friend about 2% of the time (she has done it twice, and she doesnt even clean them properly/doesnt clean everything in the sink)

She has friends over all the time as well, and they'd just cook here and leave all their shit out, and I would clean it just to make sure the apartment looks spotless. Sometimes I feel like she is a big kid with no responsibilities (See: your typical hampster). For example, today her and her mate came over for 'breakfast' at 1pm and cooked, left all the mugs/plates out and by the time I got back from uni (5pm) everything was still out, and I took it upon myself to clean it. I want this shit to change. I want her to clean properly and not be a pig, yet at the same time shes very sensitive and probably wont follow instructions, or will complain and say 'i will do the dishes/cleaning whenever i will feel like it (about 3-4 weeks later for cleaning up shit, and about maybe once a week she will do all her washing)

It may be my fault, I have been doing all the small shit and cleaning up after her and it taught her a bad habit, but at the same time I don't want a filthy environment that I live in.

FINANCES: When we bought new things for the apartment or whenever she uses food, she never 'pays us back' (most of the time it's me). For example, the bin cost $30, and she didn't offer to give me $10 for when I paid for it. Girlfriend gave me $15 instead. A new portable oven cost $50 (she said she'll never use it, but she said she'll give me $20). Girlfriend gave me $15. The thing is, the other roomate hasn't given me her $20 and it's been about 5-6 weeks now (she brings it up once every 3 weeks or so). I want to get it now.

She would just go through most of my shit and not even pay me back (For example: I bought a large jar of nutella, which my girlfriend and I would snack on occasionally. She had more than half of it, and doesnt even tell me that she finished it but fucking leaves it in the cupboard for me to find finished. I know she used it last, because she had 3 pieces of toast with nutella last night.) Or she would have as much bread as she can and not go and buy the fucking good bread herself (she would buy inferior quality. Actually, i don't think she's even bought any at all)

What the fuck do I do about my hampster roomate? I've been lurking TRP for about 3 months now (this is a new account just for TRP which I just made), yet I seem to be stuck with this situation. Thanks askTRP.