i need an analysis into my behaviour and my girls behaviour

a) It's common when you form a relationship, expectations does come up unfortunately. Perhaps! You have to tell her.. maybe repeatedly where you stand at and what are your boundaries - you cannot linger her on, gotta be assertive at one point. Communicate and It's more of attachment issue instead of love. 

B) Depends. What is your relationship status ?! If you are together.. of course it is indeed bad. If it's friends with benefits and she started to have feelings.. you are not obligated to reciprocate. However, it honestly sucks to be her.. she really deserve someone who can give her back what she wants. Honestly, it's better to let her go.