People messaging happy birthday instead of writing it on my facebook wall?

[Respectedmoney799]

This probably sounds a little sad and pathetic to be thinking about but whatever. It turned into my birthday an hour and a half ago and onlly my best friend wrote on my wall saying happy birthday- the others sent it in private message which seems a little weird. I would also like to point out one of the guys who messaged me is my boyfriend and the other guy is friends with my boyfriend but fancies me.

Are they embarrassed or something? My wall looks sad and empty.
What i'm requesting is for you yahoo members to come up with reasons why they are saying happy birthday privately instead of publicly like they would do for anyone else
I do not act spoiled, i'm just a little offended by the implications of it. And anyone saying 'be lucky they bothered' is not actually answering the question I set out.