I believe I can help you with your concern
I am sorry that you had this falling out with the woman you were dating, I can understand how this can be distressing and hurtful for you
May I ask, have you ever exhibited this behavior with another woman while in a relationship before?
Also may I ask do you or have you ever had issues with low self-confidence?
So typically when this happens, most likely you enjoyed the attention and also you felt attracted to this other woman and that probably increased your hormones to a level where you were not thinking logically and instead were just thinking about the moment. Many individuals (men and women) like when we receive attention from the opposite sex as it makes us feel good and inflates our ego, so that is probably what happened here and then kept on escalating from innocent flirting to sexting.
So you are right that this woman does not mean anything to you compared to your ex-girlfriend and you were just in the moment and not thinking rationally and enjoyed the attention from this other woman
Do you have any questions or concerns?
I see that you rated Bad Service, may I ask why?
You can type anything that you like to ask for clarification