You can't stop them from leaving. They're going to leave even if it means leaving you behind. Long-distance relationships are tough but very possible. You two have to keep in touch and remember through the tough times why you fell in love. Write letters to each other, talk on the phone, Skype.... There's so many ways to stay connected. If that doesn't work out, you need to officially break up and try to mover on. It'll be tough and you'll have horrible days, but eventually you'll get over him. Hope it helps. Good luck!
