Many characters may have it, but usually the mention of it is in dealing with the matter of why Saïx continues speaking with Demyx; a factor he questions every time they exchange comments. The muns believe it may be that Demyx has the quality that when speaking to him you know you shouldn't be watching, but you just can't tear your eyes away.

It is, in fact, a dangerous thing to be exposed to, and leads to long threads about emoticons and hotdogs.