The media likes to display two basic types of stories: the first being of the type of "if it bleeds, it leads", which helps to remind you that the world can be a dangerous and unfair place. The other type of story is that human interest story, about somebody overcoming something, such as a grave illness, or obtaining something after first being denied it, such as becoming a successful entrepreneur, supporting the premise that this is a nation of "winners, and not quitters". So that it can be said that the media loves stories with happy endings, often following the theme of love discovered, love lost, and then, finally, love re-discovered.
There is, however, an entirely different story that doesn't get nearly enough play, and that is, in the world of Facebook, that time seemingly has no meaning. That is to say that time appears to stand still for certain people that can't get over the fact that in high school or whatever, they never got the time of day from Suzie, or whomever, and now, twenty years later, there she is, in living color, on Facebook and well, even though technically you're not really friends, you are friends on Facebook, and now you can learn just about everything about her; see the pictures, the events, the places, family, friends, hobbies, habits, posting, her wall, and so forth. Making matters even worse, some people on Facebook have their phone number available, and so you can now text or call this person, or post or email something and well, it's like a time machine throwback to when you both went to school. It's like a perpetual do-over machine.
Of course, most all of this Facebook stuff is being exclusively done and obsessively researched by one party, more appropriately known as a stalker, to which, if this was just one of those private fantasy type of things, sort of like a fan, that finds self-satisfaction in vicariously projecting themselves into your life, this might be OK, kind of creepy, but relatively harmless. However, these stalkers often want to actually see you in person, after all they consider that you both have things in common, such as you went to the same high school and took some classes together, and remember that one day when you actually talked for like thirty seconds. Now it's twenty years later, with the stalker figuring that it's time to meet up, so as to catch up just like old times, as if your life has been in a perpetual "pause" over the last two decades, just waiting for the opportunity to renew your acquaintance with this stranger.
The bottom line is that somebody that has been steadily monitoring your Facebook page, isn't behaving like someone that really wants to be your friend, they are behaving instead like someone that is stealthily looking for an opportunity to take advantage of you, for their own benefit, so as to fulfill a fantasy, take revenge, or to satisfy some certain urge, and they don't really care, about your real life, the fact that you have children, a job, responsibilities, and other important obligations, instead you're just an object, perpetually eighteen years old, because for them, time has stood still.