Because you are in transference with this therapist. That means, you experience the therapist as if he or she is a parent to you, and all of us want our parents to love and approve of us. Your therapist is a stand in parent to you.
In fact, “working in the transference” means to a savvy therapist , that giving their support, approval , validation, etc, is very healing to their clients. Therapists should know this and do this. I keenly remember how much it meant to me to have my therapist value and like me. I have said that her words were “mainlined directly to the two year old in me.” That was so very healing, and I never forgot it, so I do the same for my clients. I work in the transference, meaning everything I say and do with my clients is with the awareness that I am a stand in parent and have the opportunity to re-parent, to heal, the child within the grown up who is my client.
So what you are asking about is pretty much true for all psychotherapy clients, and the stronger the transference, normally, the stronger the need for a loving parent to give the child within the adult client the esteem building care they needed and can still profit from. I hope your therapist understands this. It is why so many people say that in therapy “ the relationship heals.”
I have other blogs about transference. You might be interested in this phenomena since it effects everyone in therapy.
Good luck to you. I hope you are getting what you deserve.