Some of the best romance anime I've seen are:
-Kimi ni Todoke
-Ano Natsu de Matteru
-Kaichou wa Maid-sama!
-Nodame Cantabile
-Tonari no Kaibutsu-kun
-Sukitte Ii na yo.
-Sakurasou no Pet na Kanojo
There are probably more good ones I've seen but I can't remember any other ones now.