Hm, I don't think I know you yet. But anyways... if I were you I wouldn't send a friend request without getting to know the person. Something you will have to learn about. ;)
Getting to know you in which means "not just adding people right away, tell them about yourself and who you are" and all that.
If I get to know you a bit more, then maybe I might accept your friend request. Remember, if you'd like to keep track of people, try adding them to your contacts rather than just "adding them as your friend".