I've felt that way (though some may think it impossible for a young'n like me to feel like that). What I found helps is just planning things to tell them when they get back, or e-mail, message, or do anything you can to still keep talking to them even though they may not talk back.
"I feel less blond now and, er, smarter!'--Keira Knightley
~77th Member of the Keira Knightley Posse!~
Wow... life hates me too... I bet it's a poser.--Chelle