a charge of which I am completely and unequivocally innocent. reason enough to break off the relationship? has me kind of uneasy -- yes, perhaps I am a moral reprobate, a 'clever' moral reprobate the likes of which he does not often see -- but, how can I heal under the scope of such morbid distrust?
You probably need a new therapist. You might be upfront, and tell the guy that accused you, about your concerns, and what his professional opinion is. That will put the guy on the spot, and might induce him to put more of his cards on the table, as to why he want there, and what the plan going forward is. That might be interesting. But if someone accuses me out of the blue with no evidence other than the most flimsy circumstantial evidence that because perhaps you said A and B along with the way in therapy about something, that ratchets up the odds way up that you did C, that person after being flushed out, would be
l'histoire in my life. I would find the accusation unprofessional, and therefore even more offensive than if someone on the street dropped that dime on me.