Kaichou wa Maid-sama!, Special A, Itazura na kiss, Tordora, Angel Beats(only at the very end), Otome Yokai Zakuro, Kids on the Slope. And a lot more. If u want to look for them yourself, go to an anime site like "AnimeFreak" of something and do the advanced zoek engine. Then click the Romance genre.
winter cicada junjou romantica sekaiichi hatsukoi gravitation air tv i love my little sister haru wo daiteita antique bakery clannad d.n. angel fruits basket fullmetal panic gakuen heaven holw's moving castle(movie) kaichou wa maid-sama loveless tokyo mew mew ouran high school host club shuffle shugo chara close the last door maiden rose kirepapa koisuru boukun level c okane ga nai papa to kiss in the dark sex pistols sukisho tight rope yami no matsuei vampire knight