I did this a lot early in therapy. I went back the next session and told my therapist what was happening in my mind. Several times I even "remembered" her sitting on the opposite side of the room, where she never sits!
Then I began to understand a bit about how it was the fear of intimacy at work. The feeling good set off warning signs, so my mind 'turned' the memory into something that matched the warning signs, that justified the warning signs. Eventually, it works the other way - the feeling good dissipates the warning signs, and we can take in the feeling good.
So you are where you are, which is the only place you can be

. And it would be helpful and interesting and relieving and reassuring to talk about it with him