I don't know what to do without him. please help me

I don't know what to do. My boyfriend moved abroad today and I feel like I'm going crazy already. I don't know how I'm going to cope without him. I feel like there's no one left here for me. My friends are trying to help but no one can except him. I know I'm overeacting but i just don't want to live without him. He's the one i can turn to with everything, and he's always there to make me feel better. His smile and hug just make things seem bareable. Now he's gone and I'm lost. Please has this happened to anyone else? How did you cope? did it get easier? I love him so much.