Girls question?? help me understand lol?

[Mreswagtastic]

Yo haha, ight so I jus turned 20 yrz old and I work at tha mall so I'm pretty much there all the time and everytime I go on break (especially on weekends) to the food court there's groups of girls ( like 16 and 17ish)that stare me down n I'm ight looking black btw. Light brown skin 5'8 real lean I workout a few times a week but anywayz I was jus wondering y i get attention frm girls way younger then me but girls my age dnt