    Sentence 1: What does it: mean  when.’ soméone | adds . you ‘on  shapchat: but you can't add  them back?    Sentence 2: "I added’. someone  on, snapchat’ and -as far as Irn  aware they didn't add me. back.  This’ “ person. appears. on,-my    my © friends": list: Can‘: they  view my’ stories?"