I feel bad but...

Okay there is a girl just up the street from me and I have known her for a long time. Thing is she's hot and I can't resist the urge to fuck her pussy any longer. I need to know how to seduce her into a sexual relationship with me without either of us getting hurt or our parent's finding out. Is this phyiscally possible?

You should just tell her how you feel and keep things on the casual. It's ultimately her choice in the matter, but shower her with affection, be trustworthy and safe and you might have a chance.