A not-boyfriend. A boy who'll spend all his free time with a girl, shag her loads, say lovely things to her, even go on holiday with her - but then vociferously deny that anything is going on between them, even though it appears to the outside world as if they've having a relationship.
N.B. Girls can also do this to boys, but it seems to be more common the other way round.
"Well - when they're out in public he'll pretend he's not with her, so he can scope out other girls, but they spend all their time together, and it's obvious they really like each other. He's totally noyfriending her."
The disease of the lonely and pathetic, characterized by a marked lack of any sort of friends. It is speculated that not eventhe mother of one with this condition even cares for him or her, and there is no known cure nor will there ever be one.
"Why does this guy keep trying to hang with us all the time? He's like a satellite..."
"Oh, he's got no friends. Must be nofriendsdiseaseitis."
Someone who does not obsessively try to see how many "friends" they can acquire on websites with a "friending feature" (such as MySpace, Facebook, LiveJournal, Red vs Blue and all other websites with such a function.)
"I pride myself in nonfriendwhoreyness!" said the non-friendwhore.