I coulda asked this question a decade ago, but now i'm 32 and much wiser. Sit down and listen up. What most have said on here is true - DONT STOP BEING A NICE GUY:
(1) Women hang out with the Nice Guy in hordes cuz you're safe from harming them. . . even if you hook up, you'll still be cool with them. When other chicas see you're the center of attnetion for a group of women, they in turn will want to know you. Women are like that. They want what other women want. I swear, i knew every girl in college, even the hot ones, though i was hardly a pimp. They used to kiss me hello and goodbye and all the athletes and other dudes would scratch their heads. Pretty soon everyone assumed i was this badass cuz i knew the hotties. lol. truth is, i was shyer than fuck.
(2) Later in life, at 25, i decided to be more aggressive. Without being rude or obnoxious. Simple rule - if i fancied a chica, i would pursue her and let her know with class, dignity and good humor. If they didnt feel it, we'd still be cool. If they felt it, it was ON, brotha!
You know, so much of being a nice guy really sucks because you find out you're just being nice cuz you're afraid to piss people off or dont want to be hated. You need to END THAT SHIT. You should be nice WHEN ITS THE RIGHT THING TO DO, but, you also have to TAKE A STAND and call people out when they break morales, principles, or ethics. Naw what i mean. Let people know that you're nice, but you're not gonna tolerate ignorant ass people just to keep the peace.
That lets people know that you have something everyboy is atttracted to - Integrity. they may not know what the word means, but when chicks see it, they cant resist it. Its fuckin righteous and primal to see a decent man of priniple who can't be swayed. It's, essentially, being a badass by not being a dickhead. It aint easy to live like that, and women recognize how strong and confident you must be to do shit like that. For real.