I don't think I would use a therapist as a model for anything in my real life. In your specific scenario, setting yourself up to expect romantic partners to emulate a therapist seems risky. The person you describe as needing honestly sounds more like a parent than a romantic partner to me. I'm not saying that a partner shouldn't support you and all that, just that the way you describe it seems kind of one-sided, idealized, and like you're looking for a cheerleader rather than a partner.