Hurt, rejection, and betrayal are learned behaviors. An adult who hurts, rejects, or betrays another learned that from their parents where one or both parents either hurt, rejects, or betrays the child.
So be a good parent and do not hurt your child, or reject your child, and most certainly do not betray your child.
It can be a vicious cycle. I do none of the above, but then again I have great parents.
Never outright reject, just politely decline and admit perhaps you are being a fool.