As you state you don’t want to R, and you are in a committed relationship, my advice is to respond to her in a dignified manner that honors you and your current girlfriend.
I would keep it clean and simple and if it were me, bump her to email (unless it is an emergency in which case she can always text or call). Because that sends a clear message - you are not a priority in my life anymore, you don’t dictate terms and I have zero interest in being seduced/flirting with you. I think she wants to see your eyes to know she still has a hold over you as she certainly does not need to see your eyes to set schedules for the kids.
Something like: “ex, of course I always want to keep the doors of communication open when it comes to our kids. Let’s please move this and future conversations to email but keep it about kids/schedules. If there is anything time sensitive please text or call, otherwise let’s please email.” And I bet you receive no email on this as she is using her kids as bait. Pathetic.
And if she texts you flirtatiously, I would respond in a way you would want your girlfriend to respond if she were getting flirty texts from an ex. She has zero respect for herself and her boyfriend.
You don’t need to tell her about the seriousness of your current relationship, you can show her via your actions.
Me 41, H 47, M 15 yrs, S11, S13 BD 1: 11/4/14 we work on it; really I pretzel myself BD 2: 3/31/15 H goes down to "dorm room" 8/15: H back to MBR 10/15: H back in dorm room 1/18: H files, now divorced
