giving is not a sacrifice
there is a clear line that differentiates a loving person from a narcissistic person. its only unclear to and misunderstood by the narcissist.
when a loving person gives, it fills them up. when a narcissist gives, they feel as if something is given up. and if they continue to give, they will feel resentment.
the loving person will see the needs of another as an opportunity to love. the narcissist will feel controlled by the real and/or perceived needs of another.