Sounds like a first glance, she is being a cake-eater. Meaning, she wants you to be the stability and security, but want the OR and OM for the excitement.
I come to find my STBXW said a lot to me that ended up going nowhere with us. She would still come to me and be nice, but only wanted something from me..she did this while dating too.
You need to GAL..nothing wrong with supporting her, but dont do everything she asks for...show her there are consequences for her actions.
If she wanted out, give it to her, and let her see what its like to be out.