Your regular cannot stand the thought of another WG taking your cash! "Almost like honour among whores"
This reminds me of a situation that developed when I was relatively new to this. I went to a house where I met a very pleasant girl and I went back every couple of weeks. On about the third occasion I walked through the kitchen and another girl was there who I rather liked the look of, although she turned her back on me when I came through. Usually only one of them was there on any particular day. The girl I was seeing made the mistake of mentioning that the other one rather liked the look of me. So, intrigued, I booked the other girl the next time and she turned out to be really hot and we were quite suited in that we liked doing the same things. She only normally worked one day a week so I started going on the day she was there, but after about another six visits the first girl was increasingly at the house, and started blocking me with excuses like 'oh she's fully booked today' and it became very difficult to get a booking with her. When I eventually did I told her about being blocked and she told me she'd been wondering why her stream of regulars had fallen dramatically. But she couldn't believe until I told her that it was the other girl (they were both really nice and friendly). Telling her backfired on me because they had a bust up within a couple of weeks and the hot girl left, and the place closed a few weeks later.