I need some break-up advice?

as a chick, i must say screw her, it was very cruel of her to do that to you, but kid u are only 16, play a violent video game and picture her face as the person your shooting, hell you live in the country make malatov cocktails (fill a glass bottle with gas stuff a torn sock in it light it and throw it) its a great way to relieve stress, just dont start a ginormous fire do it on gravel or something, but in all seriousness delete her off your facebook block if needs be. call your guy friends and head to town, just continue to do what youv been doing really just do other things to get your mind off of her, i promise one day you will move on but for someone who has been in a 4 year long relationship its going to take a while.... keep your head up dude!