I am on Facebook, but please don't find me

Since I opened a Facebook account, I have received numerous requests to be my friends. Most of them, I accept... because they are my friends. Some of them, I accept... because I don't mind having them in the loop. And then there were some of them, I didnt click ACCEPT nor IGNORE... because I really have no idea who they are and I cant be bothered to find out.

A friend told me I can click ACCEPT first (make the person happy), then DELETE the person the next day, and he/she won't realize that he/she is out of the loop (and the person will still be happy - ignorance is bliss mah). But I cannot bring myself to do it... I see no point in pretending to accept the person as a friend, and then eliminating him/her behind his/her back.

Today, I received a request for which i really feel like clicking IGNORE. This person was a big part of my life long ago... but he's out long ago... and i do not wish to have anything to do with him anymore long ago... unfortunately he found me on Facebook. And I cannot decide which button to click.

I should have anticipated this possible scenario... afterall, I choose to be on Facebook. Well, I am on Facebook, but I wish that some people will not be able to find me!!! I'm full of contradictions, I know... ...