So this girl who I've known my whole life is trying to push me to go to a wedding with her. However I've already made it abundantly clear that I'm not interested/I'm busy because 1) I am, 2) She has a boyfriend and I know she's just using me as an orbiter and for attention. However she keeps pushing the issue, my gut instincts are telling me to just go radio silence but I was wondering if there are any other ways to deal with this.