I don't know which one you've watched :0 watched Toradora? Lovely Complex? I guess you have.. What about Eureka Seven? (Romance, action, comedy etc etc). La Corda d'Oro, Ouran High School Host Club, Pretear, Whisper of the Heart, NANA Uhm... Dunno what else I can suggest xP Maybe I'll find some more, but this was what I could remember XD