I don’t want to have a sex with my gf

We’re a couple of 5 years, living together for 3-4 years, both in our early 30’s. We’re generally very close like bff but at the same time I dislike how we became too comfortable with each other. We’ve been sexless for almost a year now, and sadly I’m not sexually attracted to her anymore, like not at all. The main reason I think is that the level of our personal hygiene and cleanliness is different, which for me the most important. Like brush teeth twice a day, and before going out…she tends to forget that. She looses lots of hair and would just leave surrounding full of hairs and doesn’t give a shit until I ask her to clean. I even bought her a mini vacuum but she wouldn’t use it by herself. Those things I have to tell her everyday.. like I was her mom. she also gained a lot of weight since we moved in together, and sweats a lot when sleeping, and the fact that it stinks doesn’t help either. I feel like she kinda stop taking care of her appearance since we moved in, got too much comfortable with me, which I understand but don’t appreciate. I love her as a person and she’s a part of family but I feel like those things of her are really makes me uncomfortable and I can’t think separately. regardless how amazing she is, I can’t stop thinking that she’s unhygienic and I simply don’t want to have any skin contact with unhygienic person. I tried to talk with her countless times but she doesn’t know how serious matter it is to me. She’d say “I’ll do it” and wouldn’t do it. Tbh I’m sick of it and don’t know how to tell her nicely other than “you stink go take a shower and clean this and that” writing this makes me feel like a shitty person. Maybe I just don’t love her anymore? But I want to love her again…. Any thoughts would be appreciated.