Would sending a facebook message to a friend with benefits be considered a violation of privacy?

[Rodney]

So my friend with benefits changer her number and said she would contact me later in the day and didn't. I am thinking of asking her what happened over facebook would that be a violation of privacy? It is possible she changed her number over me but she never had said anything negative to me i'd imagine if she hated me she would tell me that after changing her number rather than tell me "Oh sorry changed my number i'll give you new one later.
The reason i think it would make her mad is we kind of know little about each other we just meet up for sex and go our separate ways.

[Dollofvoodoo]

I don't understand why you would think sending someone a message in facebook would be a violation of privacy. If they're on your page, message them.

[Tanya]

Yea just message her...how are you gonna hook up again if you don't?? And I don't think she would get mad, the point of a fwb relationship is purely sex, not actually friends.