I’ve probably done 4 hand more than most, and I do really enjoy them. I had a standing deal at a spa near home, where I paid one house fee when I came in late evening, and a second girl would join us for tips if it wasn’t busy. If another customer came in, she left and I tipped her for the part of massage she did. Consequently, I used to front load the sex part of the transaction, and as it was a 2 girl spa normally, the girls had this rule about one girl staying partially dressed( to greet that new customer), while the other would be completely nude. Always humorous when they switch midway.
Whether it became FS depended on the relationship of the girls. New girl, it might be just a HJ, with a little BJ from each girl along the way. But with her best friend, it was FS all the way. And there really is nothing better than being balls deep inside one girl, with the other girl sucking on aforementioned balls and asking for her turn on the ride.
Generally though, 4 hands with girls you haven’t been with before don’t lead to FS. But it’s still good anyway to me. I like being uncertain as to who is doing what.
But if you are adding a girl to a regular favorite, you should be aware that it can alter your relationship with her, meaning all these Asian spa girls can be possessive of their regulars, and react spitefully, even if she agreed originally. Even sometimes if it was her idea. I generally ask her if she has a friend in the spa she likes, or a junior girl she wants to teach, and leave it up to her without being pushy. And I always follow up a 4hand with a solo session with my regular girl, if she is a favorite I want to maintain. I do believe giving her that confidence allows her to be more generous with the FS and the fun in a 4 hand session.