Well I went over to a girls house and her parents didnt know i was their, but i was only there cause this crazy obsessive kid calle dher and said i know where you live and im coming over but hes scared of me so she called me to comeover and while i

Well, in most circumstances I would say that she should tell her parents and you should encourage her to do so. But, if you really feel that someone else poses a threat to her you might want to step in and mention the situation to them. However, you might first tell her that if she doesn't tell her parents then you will. Good luck.

Well you should, honesty gets the best of the parentals when you are with someone. also i am sure that they will understand if you both tell her mom and dad what the situation was and why you were over there with no one else but your girl friend( if that is what she is). talk to everyone in a calm matter and i am sure that they will understand.

Yes not saying honesty is the best but in this case her parents will keep their eyes out

I think that it would be a very good idea if they knew what was going on even though it was probally a prank you never know these days.....

I would personally tell them because you never know what could happen to her. Be the protective one if she gets mad because u told her parents so what she will get over it for now its probably safe to tell,