Looking for a manga, where the main character has 2 identities.

The IMPORTANT point I am looking for is that the character must actively interact with people for both identities, and those people must not know about the other identity. Kinda like having 2 separate 'lives'.
eg Cardcaptor Sakura doesn't qualify because when Sakura is in "Cardcaptor mode" she only interacts with people who know her, Skip Beat doesn't qualify because she has changed her image but doesn't lead 2 lives(except in the most recent chapters), Bleach kiiiiinda qualifies even though it is not exactly what I am looking for.
I hope this kinda makes sense, and you get what I am trying to say.

Please no Yaoi, Yuri, Shounen Ai, Shoujo Ai, Hentai, Horror.

I have already read Detective Conan, in case anyone thought of suggesting that.

Thanks in advance =D

Some of my favorites are:
1/2 Prince
Oresama Teacher
Red Lion
Yankee-Kun to Megane-Chan
Love in the Mask
Basara
Idol Shopping

They all have romance in them though. Otherwise you can just go to:
[url]http://www.mangaupdates.com/series.html?category=Secret%2BIdentity_&exclude_genre=Hentai_Horror_Shoujo%2BAi_Shounen%2BAi_Yaoi_Yuri&perpage=50[/url]

I hope you find what it is you're looking for! Enjoy your manga reading! 😀

luck stealer is an ok example, but he barely interacts when anyone when he is a killer, and there is one or two people who have connected the lives together

kyou kara hitman kinda works as well... granted a lot of the people he interacts with as his other persona usually end up dead 😐

Few favs
Comedy:
Kyou kara ore wa!!, Mx0, Angel Densetsu, Skip Beat, Ai Kora, The Devil King is Bored

Romance:
Hana to Akuma, No bra, Shinigami Trilogy, kindan no koi de ikou, Usagi Drop, Threads of Time, Girl Friends

Most under rated:
Kindan no koi de ikou, kyou kara ore wa!.
m0r l83r... maybe >_>

Duh, Air Gear's bag-lady. XD

Akumetsu the main protagonist