There is no hard and fast definition, but if there is one gal whom you see regularly (At least monthly, I would presume.), and have been doing so for at least a year or so, and who also still gets the cockles of your heart beating more than the other gals you might see, then there's a good chance she is your ATF.

Do not assume however that you are her favorite.  You will never know that, nor should you ever know that.

Well, how would you see her flirting with other guys? Are you doing double dates?!  ATF means she is your all-time-favorite escort. Not your girlfriend.  An ATF is different things to different guys.  If you are inexperienced enough to be asking these questions I doubt you have seen enough providers to be thinking ATF...

Far too subjective to say, it depends upon what you’re seeking out of the sessions.  For one guy it’s the hottest set of lips.  Another, it’s a 10.5 in looks.  Another is looking for intimacy.  For many it isn’t even explainable, she just “is”.

I don’t think anyone should claim to have an ATF until at least a few years into things.  The starving man who crawls into McDonalds will think that’s his ATF restaurant because it keeps him from starving then and there, but does so out of ignorance of the bigger picture.

In one date you can tell that you and a provider hit it off well, and whether you want to see her again.

In a handful of dates you can tell if she might be a possibility for your personal Top-10.

It takes substantially longer to decide on an ATF who’ll last.  If you ever do have one.  Lots of guys have a handful of providers they like to see, but never one who is that much better for them.

I’ll reinforce what Mr F says:  she is NOT your girlfriend!  (Though sometimes you might find out if you’re her ATF, that’s a different beast).

I have ATF's They are both pretty cool. I have had to take the advice of a few, and remeber not to make one provider your only provider. I can remember one provider who'll I'll admit I started to catch feelings for..........once before going up to her room, her previous client and I ran into each other, and once while I was leaving I ran into another client as he was coming up.

When I asked her about it, she simply said "this is life. It is how it is"

Atf is a subjective thing. For me it consists of services and the "connection". As for feelings remember this is p4p and this is her choice of money making opportunities. If you are jealous of her flirting with other guys then your feelings are way too much in this environment and you need to either take an extended break from seeing her or find out if she has similar feelings for you but it would probably not work because you are already jealous in a p4p situation.