I think you should definitely tell your therapist as it seems to be bothering you a lot. Also, I’d say it’s a good sign that you’re worrying about this behavior rather than simply enjoying and going along with it. To me that says that your intentions are in the right place. As you said, you’re not a danger, so try not to be too hard on yourself. It’s good that you’re aware that if this escalated it could get bad. Getting help and telling your T is absolutely nothing to be ashamed of.