OK I used to watch a movie all the time but now I can't even remember the name
The movie was about some kids and they wood go tell their secrets to a sercet keeper
And this new kids moves next door his names is fill-it-up that's what the girl called him
I don't know if that was a good descripson but if you no it could you tell me :)

Little Secrets (2001)

http://www.imdb.com/title/tt0296845/plotsummary

I'm pretty sure this is the movie your thinking of. If not, it's the movie I was searching for lol

My word, if your spelling was better I might be able to help, but I don't understand a word of what you typed.