Does journaling help? Do you have good coping skills to ise? When you get these thoughts you can try to distract your mind the best you can. You could tell him but I honestly don't think its that helpful. Probably just add embarrassment and more shame. Telling them isn't always best. I had a nasty dream once. Was gonna never go back over it but I just distracted my mind and didn't focus on it
Now it's just in the past basically. Hasn't interfered with anything and he has no idea.

Good luck. This stuff is complicated