Is it safe Facebook for private pictures ?

[Joseph]

It is never safe to send these types of pictures over the Internet. I would say that the best way to do this would be through email, but that isn't even safe considering the NSA is monitoring all of us.

I wouldn't even suggest that you send these pictures through regular mail because mail does get "lost".

Another issue is what happens when (if) you and your girlfriend break up? She can post your pictures to a number of porn sites if she is vindictive.

Try Skype, but even that isn't safe since screenshots can be taken.