Well FOBD, first realize you are projecting. You don't know her true intentions here. Maybe she is playing you. Maybe she is calculating every move to get what she wants.
Or, maybe she really is a mess. Her emotions are all over the place which changes her mood day to day. Maybe she really has NO IDEA what she is doing or what she wants.
Truth is we don't know.
Be the man you want to be regrardless.
BITS
Happiness is not something ready made. It comes from your own actions.