Hi there. I have found something! It's new to me, but maybe this manga is old.
It's called "Good morning call." I wan't to know more about this manga. Maybe there is a anime too? Well, there is a lot of romance and it's funny. I think the girls out there will like it.

"Good morning call" starts like this;
A highschool girl moves in a new apartment,
and it seems like a boy in her class were going to live
in the same apartment as hers.
They wouldn't accept this, but they didn't have another choice.
The story continues with a lot of "action."