she create this word herself ..
i remember somewhere i read this article.. this meaning of this word is about "there's something (bad things) that other people wont understand in a couple"
she saw a couple walking on the steert very closely and she start to think that eventhough the couple walk together very closely there might be something bad happned between them and she created this word ....
-if i am not mistaken- someone please correct me if i am wrong ..