[mindovermatter]

Strawberry Marshmarrow is a great one, one of my favorites.
Azugamamadaio might work for you as well
I'm also going to throw in School rumble as well. It's not exactly cute, but it's kind of moe, and a superb (IMO) romantic comedy

edit: oh, how could I forget the OVA "Grave of the fireflies" it's cute, will make you want to cry, and is very well done