I wish to have suggestions for manga....sorta like these
Faeries' Landing
Zettai Karen Children
Angel Densetsu
Love Hina
Mahou Sensei Negima

Just suggest away, in fact, if you want, just suggest your favorite titles oh and by the way, my reading list is really only 1/4 of what I've really read, Too lazy to add everything on it. -_-

try He is my master.

try 1/2 Ouji verry funny
Hana Kimi verry famous

but i don't really know if you like it

Complete:

Akuma Jiten
AR - Forgotten Summer
Bokkesan
Chokotto Sister
DearS
Gift - Under the Rainbow
Houkago Play <--- recommended.
Kanaete Aizen
Love Roma <--- recommended.
Miniature (one-shot)
Suzuka
Yuuhi Romance

Ongoing:

Ann Cassandra
Canvas 2 - Nijiiro no Sketch
Choku!
Esprit
Freezing
Ga-rei
Kure-nai
Manabiya <--- same mangaka as Mahoraba.
Nagasarete Airantou
Omamori Himari

95% of those listed are shounen and seinen with the romance tag, so if you want similar titles, just check my lists. Too lazy to go through the rest.