A friend of mine sees the same therapist as me. She had a talk with us individually about not talking to each other about our therapy.

Personally I'm uncomfortable we see the same therapist because I've a bunch of personal jealousy issues around other clients. My baggage yeah.

I told T something majorly personal about that friend before or after we realised we see the same therapist...(timeline is unclear). Uncomfortable since T had to pretend she didn't know that major thing to her, and I lied for a year to my friend (so ashamed of myself) until I couldn't take it anymore and confessed to my friend that I'd told T.