"Women aren't romantics that's just literary fiction. Men are the true romantics." - Cary Grant
You my friend are not understand women. Women pursue men who can provide the lifestyle they want. If they are love the guy or are even attracted to the guy does not matter. Why? Because women have been cheating on men since the dawn of time. If a man steps out of a relationship, he is a cheater and if a woman does the same thing its an affair. When will drain a man dry if they can emotionally, physically and financially. You noted that she is concerned with your financial life, sounds like she is looking to trade up or at least use you a little. Just enjoy her for the cheater she is, but don't trust her with your heart, because she already promised not to cheat on her husband and she is clearly willing to break that promise. Since she has already made and accepted the argument that it is okay for her to cheat, she can do it any time with anyone, including cheating on you if you let her.