I'm looking for manga that's the main character (man) change the girls everyday or the man having sex with different girls everyday, I think like manga homunculus (the main character change girls everyday). If someone know manga like this, please tell me. exclude yuri, yaoi, hentai, shojo. ^^
Anything beside that is acceptable.^^

maybe kirai....

Love Junkies is what I first thought of...
You could also try to use the genre search with "Borderline H" in the advanced genre search and exclude what you don't want.

Seven days
the guy had a new girlfriend every week

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currently reading: Nyotai-ka
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http://www.mangaupdates.com/series.html?perpage=50&ex clude_genre=Hentai_Shoujo_Yaoi_Yuri&category=playboy &orderby=rating

*cough* You don't get that many... sorry, if you dislike shoujo I've got no idea what else to tribute

I don't know if you could consider Renri no Eda's protagonist as that.. I mean, does it have to be portrayed? It just states that he is a playboy, you see.. Have you tried Aishiteruze Baby? It's a very good manga. what else... ah! Kyou, Koi wo Hajimemasu is one of those! you could also try the playboy category:

http://www.mangaupdates.com/series.html?category=playboy& orderby=year

some of the titles given are yaoi, though...

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“I thought also of another thing between us. Call it trust... That is one of its names. It is a very great thing. Though each of us alone is weak, having that we are strong, stronger than the powers of the dark.”

Haru yo, Koi ( he doesn't change girls everyday, but he does do it with different girls