FY is an eternal romance..... but there are others.....
Suzuka..... Light hearted and topsy turvy it will exasperate you and delight you at the same time......... I prefer the manga over the anime, but the animated version of Yamatos proposal is mind blowing....... if I had the resources to attempt such a proposal (Namely the fireflies and the bridge)...... I am sure I would get any girl in the world to fall for even me..........
Shuffle!..... it is slightly reminiscent of Da Capo, and is a harem genre, so one might not expect much, but it will surprise you with a good storyline and excellent comic timing........
RuroKen Trust and Betrayal....... A serious and beautifully portrayed romance, I dont think I will need to elaborate.......
Ai Yori Aoshi (and Enishi)........ A heartwarming romance, another harem but with a different 'feel' Aoi is a wonderful and strong character though she is very fragile in many ways........ The anime will make you laugh and cry.......