This just came to my mind today (while browsing TRP), because I used to always say this to a few of my friends. Whenever you meet a really "cool" girl who may listen to interesting music you never heard of, or maybe has some cool interesting hobbies you don't usually see in most girls, chances are that her ex showed her all that cool shit. Yeah there are a few exceptions such as her father taught it to her, or maybe even she genuinely got into it on her own. Most of the time though, these cool hobbies seeped into her directly from the semen of the man she once dated.
For example, I have a cool friend who hikes and competes in physique. He started dating this blonde who was a total cardio bunny. Sexy, but boring with a couple of red flags. He transformed her into a fitness chick, got her into serious hiking and taught her photography. She cheated. They broke up. Now she's dating some dude who thinks he's hit the jackpot with an insanely cool chick.
I'm sure most have you been the guy that turned a bland girl cool, or maybe you found that suspiciously cool girl. Either way, food for thought next time you meet a girl who is insanely different from the rest.
TLDR; Title says it all