GFE stands for girlfriend experience. It describes the feel of a booking rather than a checklist: unhurried, warm, conversational, closer to time spent with someone who likes you than to a transaction with a clock running.
What it usually signals
When someone lists GFE they are generally telling you that the booking is not going to feel rushed or mechanical. Expect conversation, expect some warmth, and expect the time to be treated as time together rather than a service delivered. Dinner dates and longer bookings are often described this way for exactly that reason.
It is a tone, not a menu. That matters, because people arrive expecting a defined set of inclusions and are surprised when two companions who both list it describe different things.
Why it varies so much
There is no governing body for the term and no agreed definition. It spread through forums and listings over twenty years, and every person who uses it has shaded it slightly differently. Some use it to mean an emotional register. Others use it as shorthand for a particular set of activities. Both are legitimate uses of a word nobody owns.
The practical consequence is that reading GFE on a profile tells you roughly what kind of evening is on offer, and nothing precise. Treat it as a signal to ask, not as an answer.
How to ask
Ask her, once, in plain words, when you are making the booking. Most people will tell you clearly. What does not work is treating the term as a contract, or pushing for an itemised list in writing, which puts her in an awkward position and usually ends the conversation.
GFE and PSE
You will often see the two listed near each other. They sit at opposite ends of the same scale: GFE is the warmer, slower register and PSE is the more intense, performative one. Plenty of people offer both and will ask which you have in mind.