Long before websites, forums or e-mail I was one of the first to coin the term GFE. Back in the days of 300 baud phone connections, packet readers from newsgroups such as sex.alt.prostitution. Before GFE got selfishly perverted by men customers, it had nothing to do with high health risk sex acts. We know now the HIV risk is almost nil but there are lots of other nasty's one can get from unsafe, unprotected sex.
GFE meant a human connection for the moment girlfriend like more on a total level, emotional for the moment (yes it does happen other than a woman's body just a fxx and suck machine.) To me its expressed via sensual caring intimate touch which to me is far more fulfilling than just a sex object. When done legally of course I enjoy more intimate sexuality.
If you care about the G (irl) as a F (riend) you obviously would want to use a condom to protect herself and you want to be sure she uses one on all her customers. Many STD's have no obvious signs and if you care enough about your own health you would also want to always use a condom.
Dave notes to U.S. readers this does not apply in the U.S. we don't have the sexual freedoms most of the world enjoys and can never discuss any sex acts for money unlike in Canada etc.