My old response would have been to keep busy, and to surround yourself with friends. I have a new response now, though.Take some time alone and deal with your feelings. Find a creative way to work through them...if you're into art, use your emotion to create something. If you're a writer, indulge yourself in some sad, sappy poetry. You can sing, dance, exercise....whatever it is that you like. Do whatever it is as a means of catharsis...and dont be afraid of being sad. its normal, and you need to let yourself grieve for what is gone.There are lots of people around you who care, talk to some of them.