SHUD I FINISH WITH ME BIRD? (LADIES)?

We've been together for about a year & a half now and I asked her to move in with me a few months back. Everything was sound at first, I'd come home from work, make us a scran, and we'd chill out get stoned or maybe av a few drinks, and most nites go at it like rabbits! It was great! But recently all she seems to do is laze around the house, expect me to do everything for here (cook, clean, go the shop blar blar) I didnt mind doing it when I lived alone obviously but considering im keeping her, im the 1 bringin in the paypacket, the least she could do is wash the dishes, tydy the flat, go the shops every so often! I love her 2 bits ye no wat i mean but shes startin 2 piss me off! We havent had for over 3 weeks now, Ive tried talking to her but she jus tells me "im not in the mood" or "its your flat you do it" seriously ladies... how can I tell her 2 snap outa dis and get her back 2 normal? And i dont want ne stupid answers like "man up and kick her out" trust me! I would but i love this girl and just want 2 get her back 2 her normal self.