I do have some good friends. Two of them I've known long enough to trust completely - the three of us spend quite a bit of time together and I feel like I know what they'd do in any given situation (i.e., they won't fuck me over.) We know one another's real names, etc.
There are a couple of others I've met that I think are lovely and have no reason to distrust and I quite like them and am willing to spend more time with. None of us know one another's real names, I don't think, but there's no real rush to share those details.
To my thinking, there are different levels of trust. I have relatively little at risk in terms of being outed by anyone. That's not my issue. None of the women I know and like seem inclined to be malicious and I don't see them doing anything stupid like trying to fuck up my reputation with clients. (I have heard tales of jealousy along those lines.)
The final level is more in terms of what sort of person they'd be if it came to loaning money or something like that - general flakiness Would I share a flat with them, trust them to turn up for a shared tour, etc. None of these women seem flakey but I can't really say for sure. Have heard many a tale of a girl fucking over another for rent or something when they thought they knew them very well. That is something you just can't know about a person until you know them very well indeed and people are frequently surprised when someone they thought they knew does a runner with rent or whatever. I certainly have no reason to doubt any of the ladies I'm friendly with, but prossies are often a bit unstable and it wouldn't shock me if I were to, say, pay for a two-bedroom serviced flat and the other girl flaked out leaving me to pay for the whole thing. Those things happen.