My last T had me bring my fiance in to several sessions...

I don't think my experience will help you too much though. My last T has horrid to begin with. She wanted to meet my fiance because he was my main trigger (still is). Instead, she talked about our sex life. In the end, she stopped seeing me because my problems with my fiance were distracting me from my own problems enough that I didn't need her anymore! And now my fiance doesn't trust anyone in the mental health profession