some examples are
Love! Love! Love!
LiarxLiar
Any manga where the guy is crazy about the girl and shes not interested/has no idea at first. Especially ones with some kind of lying going on or theyve been childhood friends/neighbors/etc. forever.
no smut/yaoi/yuri plz. D:

"Man, because he sacrifices his health in order to make money. Then he sacrifices money to recuperate his health. And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then he dies having never really lived."- Dalai lama

Mishounen Produce. The art is gorgeous too, which is a plus. 😀

[img]http://i32.photobucket.com/albums/d25/khmershinobi/b750d351697e8dd4b2600bce2a15e1e9-2-2.jpg[/img]

__ I'll have what she's having... please~♥

Stardust Wink

Fruits Basket

Akagami No Shirayukihime

MAX Lovely

Zodiac P.I.

In SW, there are three childhood friends (two guys and a girl) and both of the guys have feelings for the girl. She develops feelings for the guy pretty fast, though.

In FB, there also two love interests (though they aren't childhood friends) and it takes forever for the heroine to realize who she likes

ANS fits very well, I think. They meet, and become best friends. He obviously likes her from the beginning (his friends even tease him about it), but she only thinks of him as a friend until later on in the manga (when she finally realizes her feelings)

In both ML and ZP, there are two childhood friends, and he's liked her forever, but she's kind of oblivious to it.

Edit: Kaichou Wa Maid-Sama also wroks, I guess . . .

http://www.mangaupdates.com/showtopic.php?tid=6575
http://www.mangaupdates.com/showtopic.php?tid=5923
http://www.mangaupdates.com/showtopic.php?tid=4791

I know there are more.

[color=green]"Officially, this machine doesn't exist, you didn't get it from me,
and I don't know you. Make sure it doesn't leave the building."[/color]

Ouran High School Host Club -- only... all lovers involved are pretty dense. loooool. (I personally liked the anime more than the manga... but that only covers a couple of volumes...)

Kimi wa Pet is an excellent example... only... it's slightly mature? Granted, I haven't seen any nudity, but the protagonist does have sex a few times (but it is during those times where she does internal monologues with herself. loooool.)

Shiawase Kissa Sanchoume -- very cute and funny... oh oblivious love...

Otomen!! Awww... the guy's such a sweetie... 😀

This category search kinda helps too: Male Lead Falling in Love First (only... maybe this hasn't been tagged on several other series).

Haven't read it, but doesn't Special A fit that category?

Cyboy
Emma
Kaichou wa Maid-sama!
Stroke Material
Usagi Drop: Becomes more apparent later in the story.
Zettai Kareshi

[img]http://i252.photobucket.com/albums/hh9/xsaranghaex/seigaku.gif[/img]

More!!

Hanatsukihime is very lovely.

Otokomae! Beads Kurabu is very funny.

Kiss/Hug -- He actively pursues her...

Hana ni Arashi is a more ridiculous read... you have to read this knowing that the premise is totally unreal. The guy's pretty funny though.

1/2 Prince - she has two guys fighting over her, but she doesn't particularly love either one until later. And the guys are both very likable and sweet.

Hanzasky, maybe? He likes her and wants to get stronger because of her, while she just hates his guts. It's shounen though, so YMMV.

You can look through this category. Male Lead Falling in Love First

Kimi ni Todoke Fits in??
dont remember the start anymore...and i'm too lazy to go check it out hahahahah