A few months ago I accepted a friend request from someone in another state whose name I did not recognize, figuring I may know them. I sent a message asking if I knew them after accepting the request, but got no response. After a few months I saw a post of theirs talking about being suicidal, so I attempted to talk them through it, and seemed to be successful, and continued messaging them occasionally. After a while, however, things started to get creepy. Even after I made it clear that I was not available for anything romantic or sexual, this person persisted in trying to get me to 'pretend' things with them of a fetishized nature, including feet and maternal 'affekshuns', saying a child could help them with such things. I again tried to make it clear that they were making me uncomfortable, but this only prompted them to ask for more affection and imply that they would become suicidal/mentally unstable if I did not give them the attention they sought. I decided that this person would only do me harm if I continued contact, so I unfriended them on facebook. They still sent messages, so I blocked them entirely, expecting the problem to be fixed. A few days later, however, they messaged me again on another media site, but this time using harsh and more intense language, insulting me and trying to demean me. I attempted to deal with the situation non-confrontationally hoping they would give up and move on, but have not yet gotten a message back. Several vaguely negative posts have been made talking about a single person, but I do not know if they were about me. If this does not stop, I will be seeking to take legal action, and want to know what to do. If it has any relevance, I am 16 and the person in question is 23, and it has been going on for a month. I've had to deal with the messages when in Kansas where I live, in Missouri, and in Texas where I stay with my mother for a part of the year.