I totally agree, there is nothing therapeutic in this situation. I don't believe in the myth perpetuated by the psychotherapy profession that it's possible to "work through" transference in every situation. The situations like yours are not workable. This kind of transference, after all, is ultimately nothing but a unrequited love, which is more than a painful experience in regular life outside therapy, but in therapy it becomes unbearable because, unlike other situations where you can stop seeing the other person, here you are stuck with someone you have strong feelings for who would never respond to them with no possibility of resolving it. Such great emotional dependency on someone you are in love with who cannot respond to your feelings is a recipe for a profound emotional trauma and it blows my mind that professionals see nothing wrong with it and believe that it's workable and potentially therapeutic.

I would find another therapist in this situation, but I realize that this may not be easy for you. I'd be great if you could get some support from people who'd encourage you to find another practitioner.