What's eating Gilbert Grape

http://screencrave.com/2010-05-11/cheap-dvds-whats-eating-gilbert-grape-public-enemies-reservoir-dogs/

It's a movie there is directed by Lasse Halström, he has made other movies fx "Dear John". But the movie "What's eating Gilbert Grape" is about the boy Gilbert, who live with he's older sister Amy Grape, the little sister Ellen Grape, he's little brother Arnie Grape who is handicapped and he's mother Bonnie Grape. Who has been a nice thin lady, but after their dad hang himself has she only becomed bigger and bigger, now is she so big that she almost live her life in their couth. Becouse their dad hang himself, was it Gilbert who should take care of the house and the whole family. It's always Gilbert who is playing and taking care of he's braindamaged little brother Arnie, Gilbert need to watch him constantly, so he dosen't do anything wrong. 
At last Gilbert is getting enough, and he hit Arnie to get him down into the bath, but Gilbert knew it was wrong so he ran away. Then he came back to apologize was it all right again. In the end of the movie is their mom going into her real bed, but then she said she would see Arnie, was she alone a little bit, but then Arnie came up to her was she dead. Gilbert had promised he's mom not to let her be a joke, so they took all their things out of the house and burned it down.