friends are not objects to keep. they have lives beyond you, and more important things to do. they're ever-changing as the leaves, with shifting values and beliefs.
solitude's a sickness, that creeps and crawls, a savvy spider; solitude's a sneaky snake, a viper, coiling tighter.
soon, you will get used to it, the lack of laughter, the endless quiet. then you will make friends anew, but someday soon, they will leave too, you can't do much to fight it.