1. AKANE-IRO NI SOMARU SAKA
A short and sweet anime with likable characters and what I thought to be a good story line. Although it was completely based on romance, they did not show much progress and all the romance was squeezed in near the end. Very good over all.
Fun anime to watch. Although it did seem a little forced there were many funny moments. I wouldn't say this is very romantic. But there is a happy ending and I thought it was pretty good.
3. ASU NO YOICHI!
This might be more of a male thing since it contains partly fighting. The characters are likable and the story line is good. Although they do not seem to get anywhere and seems to have squeezed the romance in the end.
One of the best I have watched. Lots of adorable characters and good development between the characters. The gags are good and natural. Overall very good.
5. GAKUEN ALICE
I'm not too sure this is based on romance that much. But the main character just becomes so lovable you end up watching the whole thing. The storyline is witty and reasonable. Very good to watch but not to complete romance though.
6. ITAZURA NA KISS
You can tell its not the most modern anime BUT this is one of the BEST BEST BEST romance animes out there. You end up loving the main character and the storyline is addicting. There is very much development: School-> Adulthood-> Marriage-> Babies xD Seriously recommended.
7. KAICHOU WA MAID-SAMA!
Another very good anime. It's fairly new and still has a lot to go before anything steamy happens. It looks very promising so far.
This is probably the best one I watched. This is very heart warming to watch. Very very recommended.
9. LOVELY COMPLEX
Love between a small guy and a big gal. I wish the characters would look a little better. I guess that makes it more realistic and fun to watch. Very nice and heart warming.
10. ZERO NO TSUKAIMA
Very good to watch. Probably in my top 5. Watch it even if you don't like magic and combat that much. It's just there to help create a funny and good mood for the anime.
11. VAMPIRE KNIGHT
I was a bit confused at first but continued as I heard many good reviews on it. It was quite disappointing actually. The love doesn't really develop but more as if the story slams it into your face. Goodish overall.
12. TRUE TEARS
Lot of lovable characters and very very touching story. Fits very well with the title. A must watch. 9.7/10
ITS SO GOOD! Very good plot and mood even with only 5 main characters. Love the twist near the end and surprised at how far they go. This is truly a heart warming anime.
14. SPECIAL A
I actually do not know completely what to say as I stopped watching it half way through. Although I can't remember why since I remember it to be a very good series. Maybe because the top student is unbelievably amazing at everything? Very good anyways.
15. SHAKUGAN NO SHANA
Very good anime with a long story although their love doesn't develop very much, due to Shana's shyness/stupidity. But they're cute to watch.
16. SCHOOL RUMBLE
Very good story. I NEARLY stop watching it as the start was very boring. But you soon come to love the characters (for me... everyone except Tenma) A must watch.
17. SETO NO HANAYOME
Perhaps a little too much comedy at first... but you end up falling in love with the female main character. All the other characters are good also. Not very romantic but watch mostly for the funny plot and gags.
18. OOKAMI-SAN TO SHICHININ NO NAKAMA-TACHI
Very new. Still ongoing. Looks VERY VERY promising. Could become one of my favorite series soon. The characters all seem good so far and the gags and good and natural.
19. NOGIZAKA HARUKA NO HIMITSU
Very good romance with lovable characters. Very recommended.
20. NAGASARETE AIRANTOU
Yes there is romance in this... But this is really just to watch to have a good laugh although romance is still a big part.
It's really a good story for sure.
22. NYAN KOI!
I think this had lots of potential but the romance was constantly avoided by the masses of cats... Still, it was very good.
23. MYSELF; YOURSELF
Despite the title its actually quite a sad story with a very good romance all round. Recommended.
24. BOKURA GA ITA
The start of school life. To the girls that also meant the start of their love lives. For brand new first year student, Takahashi Nanami (Nana for short), it was no different... She happens to end up in the same class as the incredibly popular Yano Motoharu, who rumors say that two thirds of the girls are guaranteed to fall in love with. Eventually Nana falls in love with Yano and the start dating. But soon Nana finds out about Yano's ex-girlfriend who died in a car accident over the summer, and also that he still loves her. But it eventually works out!
25. ANGEL BEATS!
Actually, is not too romance but this actually a good anime to watch!