You know sometimes it takes real strength to make yourself vulnerable, and maybe the connection helped you to do that. If there's that trust there for you to have said what you said then you must have felt/feel that you are in a safe place with your therapist do you think?? So, maybe not as much need for it to bother you??
Or maybe you just needed (inside you) to "get it out" and broke down the barriers to do that. So perhaps you should "allow yourself" that and make the most of it in the process of moving through things??
Sometimes it is going to get harder before it gets better, in terms of facing and voicing things. And perhaps instead give yourself real credit in putting out there what you needed to??
So when you replay the scene try to look at you in that scene in a different light, you weren't weak, you were strong in being able to say what you did. Allow that thought/image to replace what you are feeling right now.
Best wishes
Alison