My Friend Un-Friended me on Facebook and it Hurts

My Friend Un-Friended me on Facebook and it Hurts? I get that a lot and intend to ask people how this really feel. You log on to Facebook and find out you've been unfriended ,how does that make you feel?  I say maybe it hurts, not only that you may have been close to the person but because Facebook holds a stake in our everyday life, it’s part of our identity. No doubt Facebook has come to stay and its everyday influence on the teens and youth is growing but the social network is online and there is still that physical world, How do react if a friend un-friends you on Facebook or stops following you twitter? Do you feel it affects the physical friendship atmosphere, or is just one of this things or its time to re-evaluate your friendship with that friend. How has Facebook affected your life till now with your friends?