oh I so understand where you are coming from hon! I have that same kind of relationship with my daughter and it HURTS!! you do and do and do and nothing nada zip! they expect it from you. no thanks ever given. my daughter lived with us for 4 yrs rent free. not offering to pay one thin dime. borrow money and never repay it.
I feel the same way as you do! you are not alone hon. (((Hugs)))