I wanna move out Need Advice!?

I am 17 about to be 18 in sep 11. When i was 10 years old my parents got separated we lived in an apartment my mom had to work monday- friday come home very late on weekends she would go out to party's or night clubs. i had to take care of my brother and sister my brother was 5 and my sister was 4 i toke care of the them for 3 years. In 2005 my parents got back together and had jesse my little brother, ever since my parents got back together they go out a lot and im always home stuck taking care of the kids I am a teenager idon'tt go out idon'tt get to go out at all because my parentsdon'tt let me. my dad worksdoesn'tt come home till friday night. my parents think that by giving us everythingthat'ss bought or because we have everything at home is all we ever need. But the truth is theydon'tt really now that all we ever needed that never cost anything was something called LOVE. my momisn'tt mybest friendd though i wish to me it feels like we are strangers i cant talk to my mom because its like if shedoesn'tt care. A week ago i told my mom im leaving the house she said okay esta bien its like okay okay this tells it all :( I have done so many mistakes in life and im only 17 , but its all because therewasn'tt someone to tell me right from wrong ever since i was little i had to learn on my own i am learning by every step i do and life is reallyrufff ! sometimes i always said i wanna quit but there was God holding me very high and holding my hand to tell me your very strong! I am tired of always being home , Doing my parents job of raising there kids. Its like im there mother. Well i have a boyfriend, i have been with him for 3 years and 2 months i talk to him about this he tells me moving out its not the way out and that if i do decide to ever leave i can stay at his house. i really need help thanks!