i have this 1 it chick
and i cant get her off my mind
can anyone tell me how to try get her back with out looking like a complete retard or looking to desperate??

Go meet other girls, until you completely forget her.

Then you'll see she's not that special anymore.

The more you obsess with one girl, the more you lose her.

couldn't agree more with the guy above me, u cant obsess over one girl, it wastes your time, instead of obsessing bout her you could've been trying to meet other girls and haveing a better time and probably meet someone u would've liked.

bro you gotta remember that there are plenty of fish in the sea

I know the feeling all too well. You're hurt and she is the apple of your eye. For whatever reason, she has chosen to move on. There is some level of incompatibility there. You cannot force someone to want to be with you. If it was meant to be, it will be, but for now, go out, talk with other girls and regain your frame. Have a good time, I disagree with the statement that going out will make you realize that she's "not special." All people are special. On the other hand, going out and meeting other women will help you realize that you may WANT this other girl, but you don't NEED her to achive happiness in your life.