acquaintance
"acquaintance" is such a complicated word. the dictionary says "a person one knows slightly, but not as a close friend"
that definition does not even begin to explain what an acquaintance is.
and acquaintance can be the example given by the dictionary. it can also be a person that you will not accept friendship from. it can be someone that you know almost everything about, yet you deny friendship of the said person. it can be a friend who you don't see that much, or don't feel close to. to be an "acquaintance" means much more than to not be friends. acquaintance can not really be defined in a few words, its just that type of thing that takes a laid out explanation rather than a definition. an acquaintance can range from anywhere between love and hate, and that doesn't mean it can't be either of the two. it could even be both at the same time.
an acquaintance can be many things
and i could go on and on about it, but i feel like i should stop here

and let you ponder
Greg and Lilly aren't quite friends, yet they know so much about each other, and have so much in common. They aren't enemies either, even though they fight all the time, and often piss each other off. I guess you'd call them acquaintances. 