I have this girl I really like, and she keeps trying to get close to me but I have to keep moveing away because I keep getting a erectoin, when she gest close. I am really frustrated, because it only happens when she gets close and not other girls. Now I think she doesn't think I am intrested anymore because of that, is there anyway to control this stuff?

Well the first thing you have to do is control your body. Mind over body and you will be fine. Think of things like baseball, trees, or anything you don't find erotic that way you will keep your mind of this girl and won't get an erection. Now it's not fool proof by anymeans, but it usually works.

When taking to her think something that you enjoy.
Something like sports, your pet, your school work.
Does she know that you like her??

When you are around her just start thinking about some boring stuff. It works. Also if she is into you hook up with her because then some guy will and if you like her it's going hurt.

You have had some really good answers here, I agree that you need to keep your mind on other things when your around this girl to try and stop getting an erection when talking to her, try and think about what you have been thinking when you see her or touch her and this may help you think about what not to think!. There is never a 100% safe guard as your talking about Hormones that are making your erection !

But you really need to face up to this girl and tell her that you are interested and want to be with her before some other dude comes along and asks her..

i have this girl i really like, and she keeps trying to get close to me but i have to keep moveing away bc i keep getting a erectoin, when she gest close. I am really frustrated, bc it only happens when she gets close and not other girls. Now i think she does'nt think i am intrested anymore because of that, is there anyway to control this stuff?
You can't control it , it just happens.tell her you really like her and try to control your feelings some maybe that will help, slow your thoughts down some if possible