I always wonder. My BPD is very smart, very transparent. It's extremely easy to see his thoughts jump through their respective hoops. I hear him often in therapy (not trying to but it's a tiny apartment) and he doesn't talk about us much at all. Anything I used to see as manipulation now just sort of seems like someone who started to try to address something, got too close to a bad feeling with no FP around, and backpedaled into a logical conclusion of that near-confession. However, my BPD also has a lot of people pleasing tendencies from how he was raised which plays out very strangely. I can't speak for everyone.

How does he misrepresent about your relationship in therapy? What kind of stuff does he say?