GOOD ROMANCE ANIME?

Lovely Complex is really good

Prison school

Kamisama Hajimemashita, Ao Haru Ride, Kaichou wa Maid Sama.
https://www.youtube.com/watch?v=RGTIpnn7tKQ

Toradora

Fruits Basket I think the manga was better but there is an anime
Tail of the Moon ( this was never made into an anime but its a cute romance manga if you are interested).
Special A
Rurouni Kenshin (Action/Romance)
Ranma 1/2 is a comedy/romance/action series
Kare Kano is fun to watch
Kimi ni Todoke slow but interesting
Wolf Girl and Black Prince
Snow White with the Red Hair is cute
The Girl Who Leapt Through Time is a movie but good

Akagami no shirayukihime - I LOVED the comic but didn't really like the anime adaption. But its still a really good story

Clannad - Prepare tissues before you watch it

Working!! - A light-hearted and lovely story, the 3rd season is the best.

Some of my favorites
Sword Art Online (Action/Romance)
Clannad
Plastic Memories
Zero no Tsukaima (Action/Romance)
ef A tale of Memories
ef A tale of Melodies
Sakurasou no pet na Kanojo
Rakudai Kishi no Cavalry (Action/Romance)
Inu x Boku SS
My little Monster
Nogizaka Haruka no Himitsu