I met this girl 3 weeks ago.. we talked a bit, danced etc. She had to go home early but i got her number and all. When she left her friends told me i shouldnt ask her out... so i didnt. I cant stop thinking about her... what now?

I met this girl 3 weeks ago.. we talked a bit, danced etc. She had to go home early but i got her number and all. When she left her friends told me i shouldnt ask her out... so i didnt. I cant stop thinking about her... what now?