So i am someone who is never ever serious... im a jokester.. all my friends know this.. well a friend of mine got mad at me cuz she was like "dont talk to me" and i was like "lets go come on id kill you lets go" and i grabbed her neck just fooling around.. and she took this seriously.. we havent talked for 2 weeks since this i keep tellin her im sorry but she wont listen.. me n her used to be best buds and now i cant even look at her... should i not be her friend or keep trying...?