Why does my therapist think I like him?

I’m (28) seeing my therapist(35) for 6 months now, theraphy was going very well. I started dating a guy and started to talk about him during the therapy.

I was telling that my date invited me to his place on first date and I felt so angry about it. All of a sudden my therapist asked me “ Do you angry because You went on a date with him instead of me because you can not ( he has a partner)? “

I was shocked and asked him what is he talking about. I have zero interest in him and I was happy about the theraphy process. Now it has been 2 days since, I’m seeing nightmares my therapist is raping me. I’m so confused- sad- angry. What should I do?