Good move, stopping the flirting while she's seeing someone else.

Sounds like all you can do -- and should do -- is move on with your life, and give her the space she needs to sort out what she wants out of life. She sounds majorly confused.

Me: 50, MLC/WW 45
Young kids
Nov 2015: BD1
Apr 2016: BD2
Jan 2017: W filed
Feb 2017: D final