I chose these two mangas as my favorites because a) there's not much drama and winy bullies going after the guy (talk about a big annoying shoujo cliche btw!) and b) of their simplicity 🙂

-Love So Life (age gap): one of my favorites! 😃
-Kore wa Koi no Hanashi (age gap): another one of my favorites! 😉

** "Be a rainbow in someone else's cloud."**

so.. my personal favourites would be a few, I'll try to make it as brief as possible ^^

Hana Yori Dango
Goong
Bokura ga Ita
Ao Haru Ride
NANA

probably a few more that I don't remember right now as well..

朝露の少女。

“The longer we live, the more weight we carry in our hearts.”

Skip Beat! - still love it after 32 volumes
NANA
Ghost Hunt - mystery/slight horror/dash of shoujo
Natsume Yuujinchou

I'm not the passionate shoujo reader. Nevertheless I know (and love) a few.
Mars was one of the first I read, since then nothing else can top this.

My absolute favs:
Akagami no Shirayukihime
Love So Life
Skip Beat!
Bokura no Kiseki

Drop by my fanfiction page! 😀 One Piece, Hetalia, Bleach, Harry Potter and more!
[url]http://www.fanfiction.net/~stelraetnae[/url]

Daytime Shooting Star
Hana Kimi
Fruits Basket
Kingyo Sou
MeruPuri
Mars
Love Com

I'm not a love story lover but I think shoujo are very suitable for fantasy, adventure and sci-fi stories 🙂

Banana Fish
Yasha (YOSHIDA Akimi)
Kaguya Hime
Basara
Hyakki Yakoushou
Onmyouji
Hotel Africa

Bokura Ga Ita
Ao Haru Ride
Cat Street
After School Nightmare

Hana to Akuma
Kaichou wa Maid-sama!

[color=violet]Tournament Round 1[/color]
[color=blue]Round 2[/color]
[img]http://i.imgur.com/CcwHreL.png[/img][img]http://i.imgur.com/aQ0E4sC.png[/img]

Ouran High school Host Club
Hana to Akuma
Mars
Beast Master
Diamond Life
Miriam
The Friendly Winter

[img]http://i60.tinypic.com/2dj58x1.jpg[/img]

Well, according to me these are my all-time favourite shoujo manga that I can just keep reading over and over again. Ah, those were the days.
NG Life
Sarashi Asobi
Beast Master
Beauty Pop
Horimiya (ongoing, I know XD)
😀

Defeat your foes with randomness and lightning fast typing speed.

Akagami no Shirayukihime
Hana-kun to Koisuru Watashi
Taiyou no Ie
Bokura ga Ita
Fruits Basket

Can't think of more. Those are my favorites of all time.

“If I'm going to just live taking someone else's place, then it'd be better if I could just be a pebble. That way, there'd be neither misunderstanding nor confusion, and then even you wouldn't know me.” — Eine Kleine (Kenshi Yonezu)

These are probably my top three:

Hachimitsu to Clover
Bokura ga Ita
Nodame Cantabile

But I also really like:

Ouran High School Host Club
Cat Street
Dengeki Daisy
Mars
Hana Yori Dango

Some of those are josei, but whatever. 🙂

I've have stopped reading shoujo manga a long time ago.
But I always find myself re-reading Lovely Complex from time to time

[img]http://i1203.photobucket.com/albums/bb395/xXTsukiXx/26852202_zps6e5cdbef.jpg[/img]

Absolute Fav (Not in order)

14-sai no Koi Ongoing
Darling wa Namamono ni Tsuki
Moe Kare!!
By Hero (although its one shot)
B.O.D.Y.
Itadakimasu
Orange by Takano Ichigo Ongoing
Gekkan Shoujo Nozaki-kun Ongoing
Last Game Ongoing
Kyou no Kira-kun Ongoing

From the top of my head 😃