How can i get my boyfriend's family to like me?

I stay with my boyfriend at his house and his mom doesn't really like me. she told me that i have a home to go to and and im welcome to come sometimes but not all the time. And his grandmother this morning asked why i am still here???? I go to work...

Tuesday thru sat. and he has school and work so we don't really get to spend sometimes with each other so when im usually there he is doing homework and i am just hanging out. How can i make his mom like me more.. and his grandmother. His mom also says that i never offer to help to clean or anything and i owe money for bills b/c she didn't know i would be staying for that long. i was maybe there for 2 months we have been together for almost a year. so now i owe her money for help pay for the bills. why do they hate me so much?

It is not your boyfriends house, its his mom's house. Its common courtesy that you are staying at you pay rent, clean and help with the bills. It seems to me that its not the fact that they don't like you, its the fact that you seem to be a freeloader. You have a home but your staying there and not helping out with anything.