Otc and 3way kissing

Ok. I need advice. Ive been seeing the same girl at a club 5 times now. Last 2 times we have had vip type sessions with her and a girlfriend of hers at the club. Now me and the girl text eachother through out the week and discussed setting up otc dates(non monetary ) during our 3way sessions these girls are allowing me to passionately mouth kiss them at the same time (amazing) but now im feeling more of a attraction towards her friend. I mentioned to the main girl. What her thoughts were on me wanting to see her friend otc also. She seemed to get a lil upset and also showed signs of jelousjy. She told me that she would not pursue otc relations with me if i was also with her friend. She added that she would only allow her to join us while in the club, but would only otc with me if she was the only one. She also texted me that i come correct with my intentions with her because she said she actualy is starting to like me would honestly miss me. How should i handle this?