Hey i Like romantic comedy mangas i read a few like lovely complex and hana-kimi but i have a lot of trouble finding new ones :) please let me know :D

I highly suggest The World God Only Knows. I'm in love with it <3 Its anime just finished its third season, but I suggest you read the manga first :3

Oyayubihime Infinity. It's not that long, and it's an awesome story about featuring people with butterfly birthmarks on their thumbs and how 'destined love' isn't so destined. sorry, I probably make it sound corny, lol. But it is seriously one of my favorite series ever.

Fruits Basket is definitely worth a read if you haven't already, and i think Ouran High School Host Club is quite nice too.

There is this one I read a not that long ago called My Lovable Fatty, I loved it. It was really good.

You might like Kuragahime/Jellyfish Princess. The story is adorable, and features several otaku girl main characters, whose interactions are hilarious.

Otomen is pretty cute! I also really liked the Devil Does Exist. Highschool Debut is awesome, too! Never read the manga, but the anime of Toradora! is fantastic.

Yurara no Tsuki. It's supernatural/comedy/romance! :D Lesser known but amazing! I LOVE the spin off series Rasetsu! Hahaha lovely complex was great!

Maybe you'll like one of these.

Ookami-heika no Hanayome
Koi Dano Ai Dano
WILD WING
Houkago Kiss
Ouji Romantica
Animal Jungle
Celeste Blue
Sakura Rhythm
Penguin Prince
Beast Master
Yandere Kanojo
NG Life