I've never really stopped to think about it. After 2 retirements, I still have clients who have followed me for years. Some have moved on because they've settled into their own relationships, stopped doing this or possibly went to see other escorts. When I returned to this, in my first 2 weeks, I had about 10 contacts from old clients. A few others have popped up here and there in the last week or so.
I think, like most things in this, its variable. Most of my business is repeat I suppose, but I don't expect to have a booking and he'll return. I was pretty much a touring escort for a while by preference, and I got a lot of repeat business as well.
I don't think there's any real secret to it; I wouldn't say I'm particularly charming

I like to have a laugh with clients I suppose. That's probably about it, besides the obvious.