A person who is thought of as more of a stand in or a temporary solution then someone who they meant to be hanging out with but is very reliable.

A good friend who is merely in love, but decides to help you with your love anyways. They're usually sweet and kind, but discreet. They're just forging a friend relationship with you to keep tabs in a non-stalker way.

someone whom is not "technically" your boyfriend/girlfriend, but whom seems to fill the traditional roles of such a position. Sort of a boyfriend/girlfriend who is not recieving benefits.

Someone who you have vaguely heard of. These people are the source of malicious gossip and urban legends.

when you're too scared to commit to your definition of a perfect girl so instead of friendzoning her you put her in a place between friends and something more so you can have your cake and eat it too

A person who is not connected to you by friendship, but is connected to you by being a friend of someone who you are connected in friendship with.

Can be used to describe a Fuck Buddy or someone you are trying to fool into thinking they are your boyfriend/girlfriend.