You can't have them back. I know it sounds bad, but just think aboput how selfish you would be being if you brought them back, even for a moment to say goodbye. They love u and are sorry to have to leave but the thing is, they had to. They could have been hurting and if they were, you bringing them back could make them suffer. You don't want to hurt the ones you love. They are with you. You can pray to them and they will listen and look over you. Remember them and they will love you.