I heard about this manga before?
It's about a girl going on a school, but everytime she things about a boy that goes at the same, her breasts grows, the whole BE thing start at her home as I remember. She's trying to stop thinking about him, so her breast will stop growing too. Her breasts just keep getting bigger and bigger! Can't remember when it reach it's climax. I'm sorry for the short info, I remember it used to lay around the forum, and I searched and searched, looked in the manga list too, but many of the links where down.
Sorry for this lame delurk.. haha
I guess a lot of you will find it interisting, it's the best one I know